Logan E. Hargrove, a longtime supporter of acoustics, especially physical acoustics, performed his own important research and also had a wide impact in the scientific careers of others and the Acoustical Society of America (ASA). He passed away on February 18, 2019.

After receiving his PhD in physics from Michigan State University (East Lansing) in 1961, the first stage in Logan’s career was at Bell Laboratories, where he invented the mode-locked laser. Much like the acoustic longitudinal modes of a long pipe, the longitudinal optical modes of a long laser cavity are nearly harmonically spaced, with a frequency spacing equal to the inverse of the round-trip time of light along the cavity. A tube of energized helium-neon inserted in the optical cavity provided gain to many of these modes, which, in general, would be excited at random amplitudes and phases.  Logan’s invention was to also insert a glass block attached to a quartz ultrasonic transducer into the optical path. By setting up a 28-MHz acoustic standing wave in the glass transverse to the light, he could periodically modulate some of the optical beam away from the optical axis twice per cycle at 56 MHz, the inverse of the optical round-trip time, because the glass block became an optical diffraction grating on the positive or negative density fluctuations of the glass. He discovered that beyond a certain threshold of sound amplitude, the speeds of individual optical modes would adjust to lock their phase onto high multiples of the 56-MHz modulation. When a large number of these modes phase lock together, their Fourier superposition is a very short, very intense pulse of light bouncing back and forth along the laser cavity. Others refined the technique to generate pulses of femtosecond lengths.

So if you hear about mode-locked femtosecond lasers being used in fast chemical reaction experiments, pump-probe measurements in semiconductors, two-photon microscopes, or bladeless LASIK eye surgery, a significant piece of that is due to Logan. The GPS system and the fundamental definition of the unit of time rely on atomic clocks that use a stabilized frequency comb (work that received the 2005 Nobel Prize in Physics), which relies on mode-locked lasers.  Logan’s invention of the mode-locked laser, at 29 years of age, is still important.

After 13 years, Logan left Bell Laboratories to join the Office of Naval Research as a deputy director of the physics division and program officer because he felt he could have more impact on science by supporting and influencing the work of others. There, he sponsored work in fields such as nonlinear acoustics, the unusual acoustic modes of superfluid helium, resonant ultrasound spectroscopy for measuring the mechanical properties of exotic materials, and thermoacoustic heat engines.

Logan was a driving force behind the creation in 1992 of the ASA Physical Acoustics Summer School, which brings together otherwise isolated graduate students in a week-long immersion into wide aspects of their field. He served on multiple ASA committees. He received the 1970 ASA Biennial Award for contributions to acoustics and was a Fellow of ASA and the American Physical Society. Logan is survived by two sons, three grandsons, and two daughters-in-law.

Selected Publications by Logan E. Hargrove
Hargrove, L. E. (1960). Fourier series for the finite amplitude sound waveform in a dissipationless medium. The Journal of the Acoustical Society of America 32(4), 511-512.

Hargrove, L. E. (1968). Mode Locking in a Synchronously Modulated Maser.
US Patent No. 3,412,251, November 19, 1968.

Hargrove, L. E., and Thurston, G. B. (1957). Optical method for analysis of fluid motion. The Journal of the Acoustical Society of America
29(8), 966-968.

Thurston, G. B., Hargrove, L. E., and Cook, B. D. (1957). Nonlinear properties of circular orifices. The Journal of the Acoustical Society of America
29(9), 992-1001.

Written by:
Joe Dickey
Email: joe@joedickey.com
3960 Birdsville Road, Davidsonville, MD
Robert M. Keolian
Email: keolian@psu.edu
Sonic Joule LLC, State College, PA

James R. “Rod” Fenn, 87, passed away February 15, 2019, in Apple Valley, Minnesota. Rod was the son of the late Roger P. and Alice M. Fenn, born May 16, 1931 in Tulsa, OK. He was preceded in death by his loving wife, Myrtice “Myrt” Rowe Fenn.

Rod graduated from Tulsa Central High School and obtained a B.M.E. Degree from the University of Tulsa where he was a member of Lambda Chi Alpha and Kappa Kappa Psi honorary music fraternity. After his honorable discharge as a Captain from the U.S. Air Force, Rod enjoyed a long career as a commercial pilot.

Rod is survived by his three children: James M. Fenn, M.D. and wife, Vickie of Baton Rouge, LA; Cynthia “Cindy” Fenn and partner, Nicholas Wolf, of Prior Lake, MN; Cheryl Fenn Macek and husband, John D. of Sulphur Springs, TX; and seven grandchildren and three great grandchildren. He is also survived by sisters, Joan M. Fenn Teague, Mary Ellen Fenn (Gene) Whiteford; and a brother, Duane A. (Christine) Fenn.

A Memorial Service will be held on Monday, March 11, 2019, at 2:00 P.M. at Parkview Baptist Church, 5805 S. Sheridan Road, Tulsa, Oklahoma 74145.

CHRIS VADALA, JAZZ LEGEND, SCHOLAR AND EDUCATOR DIES AT AGE 70.

One of the country’s foremost saxophonists shared his love for jazz at University of Maryland’s School of Music for 25 years.

Chris Vadala was a jazz legend.

He was also a University of Maryland distinguished scholar-teacher (2010-2011), director of Jazz Studies and professor of saxophone in the School of Music. Even while battling cancer for the past 10 years, he never missed a single performance or university obligation and continued teaching up to his death. Vadala passed away on January 17, 2019 at age 70.

One of the country’s foremost saxophonists and woodwind artists, Vadala was in high demand as both a performer and educator. He was a rare example of someone highly proficient in both jazz and classical music.

He appeared on more than 100 recordings playing saxophone, flute and clarinet. Vadala was featured in innumerable jingle sessions, film and TV scores including “Criminal Minds,” “Zombieland,” “Life After Beth,” “Avalon,” “The Children of Sanchez” and “Saturday Night Live.”

“Chris’ musical brilliance was heard by millions of people worldwide,” said Chris Gekker, professor of trumpet. “As a jazz improviser, he could pierce your heart with tenderness.”

Throughout his career, Vadala performed and recorded with such greats as Diana Ross, B.B. King, Ella Fitzgerald, Aretha Franklin, Natalie Cole, Stevie Wonder, Frankie Valli, Kendrick Lamar and Patti LaBelle to only name a few.

Most notable was his long tenure as standout woodwind artist with the internationally recognized Chuck Mangione Quartet. With this band, Vadala held performing credits on five gold and two platinum albums and won two Grammys, two Emmys and one Golden Globe Award. The quartet’s 1977 hit single “Feels So Good” featured Vadala’s famous saxophone solo and reached No. 4 on U.S. charts.

In 2018, he celebrated 20 years as the first call saxophonist with the National Symphony Orchestra (NSO) and NSO Pops. He regularly performed on the Memorial Day and Fourth of July concerts from the West Lawn of the U.S. Capitol.

A native of Poughkeepsie, N.Y., Vadala graduated from the Eastman School of Music, earning the honor of a Performer’s Certificate in saxophone as well as a B.M. in Music Education. He received an M.A. in clarinet from Connecticut College and pursued postgraduate study in woodwind doubling at Eastman.

His expertise in woodwind doubling – the skill of playing more than one woodwind instrument – appeared regularly in the “Saxophone Journal” for over 10 years. His book “Improve Your Doubling” is acclaimed as a valuable contribution to the field.

In addition to his many accomplishments as an artist and a scholar, he is remembered as a generous and caring teacher.

“The list of household names Chris performed with is astounding, but he was just as committed to working with young jazz students,” shared Mark Hill, coordinator of winds and percussion. “His tireless dedication and success at creating a high-level jazz program was an inspiration to all of us.”

In his 25 years as director of Jazz Studies, Vadala completely transformed the university’s jazz program.

“He created a world-class program from almost nothing, energized the wind and percussion division and was a driving force in the development of the band program,” said Michael Votta, director of bands.

Vadala and the graduate students he trained conducted all of the UMD jazz ensembles. Under his tenure, he grew the program from two to five jazz degree offerings.

“Chris brought tremendous devotion, passion and artistry to his work at UMD, along with an unfailing generosity of spirit as a teacher, mentor, colleague and friend,” said Jason Geary, director of the School of Music. “Under his leadership, the jazz program rose to new heights and gained the national reputation that it enjoys today.”

The university community mourns this loss and extends deep sympathy to his family, colleagues, fellow artists, students and loved ones.

Sound bytes, CD purchases, full discography, publications, and more information about his life can be found at chrisvadala.com.

Additional Obituary:
The Diamondback

RED LION – Hey Connectors, DK here. I sallied up to the bar in the sky and first round is on me so let me hand it over to my beautiful bride, Korey (Warner) Knight.

Douglas Knight, “DK”, 46, was a chief connector, social entrepreneur, disrupter and a faithful believer in everyone that he met. He resigned his position as York City’s cheerleader on January 4, 2019.

After a wrong turn on the Ben Franklin Bridge, Doug was born in Mt. Holly, NJ on September 13, 1972, the son of the late Martin Joseph Knight and Judith Helen Sasala. He spent his entire career working in the non-profit sector in Portsmouth, NH, Washington, D.C., and York, PA. He affected positive change everywhere he went and helped more organizations and individuals than we could possibly name here.

He was a 1990 graduate of Portsmouth High School in Portsmouth, NH (go Clippers!) and a 1994 graduate of Syracuse University. He marched trumpet line with the Clippers and Syracuse Marching Band and became a Kappa Kappa Psi fraternity brother. Doug served as Kappa Kappa Psi’s 2nd National Chapter Field Representative from 1994-1995.  He was a member of the York Elks Lodge #213 and its secret society, the Slumbering Groundhog Lodge. Doug was a member of St. Matthew’s Cathedral in Washington, D.C. He was an unapologetic New England fan, loved everything about music (he was frighteningly good at “name that tune”), was the 2018 Pumpkin Bowling Champ and was in training for this year’s Candy Land tournament. He wanted to be remembered as “the inventor of Drum n’ Bass music, plus the pan flute”.

In addition to Korey, Doug leaves his two cats, Lord Izaak Duke of Earl Grey and Lady Day Izzy Grey; his mother, Judy and her partner, Everett Nichols of Lewes, DE; a brother, Greg Knight of Aston, PA; a sister, J. Logan Leonhardt and her husband Brett of Reston, VA; brother and sister-in-law, Mitchell and Sarah Warner, and niece, Avery; father and mother-in law, Eric and Tollye Warner; and his beloved aunts, uncles, and cousins. He was preceded in death by his father, his grandparents, John and Eleanor Sasala and Martin and Lucille Knight, as well as his uncle, Wayne Sasala.

A memorial mass will be held on Friday, January 11, 2019 at 12 p.m. at St. Joseph Catholic Church, 251 E. Main Street in Dallastown, with a visitation from 10 a.m. – 12 p.m. The Reverend Mark E. Weiss will be officiating the service. Life Tributes by Olewiler & Heffner Funeral Chapel & Crematory, Inc, 35 Gotham Place in Red Lion is assisting the family with the arrangements.

A public celebration of a kick-ass life will be held Saturday evening, January 12 at York Elks Lodge #213, 223 N. George St. in York. Details to follow.

In lieu of flowers, please consider making a gift to a non-profit whose values speak to you. Send condolences at HeffnerCare.com

Kelli George Lawing, 32, loving wife of Michael Lawing, entered into the loving arms of her creator and savior Saturday, December 29, 2018. Born July 23, 1986 in Aiken, SC, she is the daughter of Harry and Dianne George.

A 2004 Aiken High School Graduate, Kelli went on to earn her bachelor’s degree from the University of South Carolina in 2008. Always serving others, Kelli was a brother of Kappa Kappa Psi – Zeta Chi and a member of the Carolina Band. Kelli worked for SC State Housing for nearly a decade.  She will be well-remembered for her bright, loving, and welcoming personality.

Kelli’s greatest joy was her family, especially her children, Jenalyn and Julianne. She was a devoted mother, wife, daughter, and sister.

Survivors include her parents, loving husband Michael Lawing, daughters Jenalyn and Julianne Lawing; brother Kyle George (Becky); grandmother Barbara Herron. She was preceded in death by her maternal grandfather George Herron; and paternal grandparents Leslie and Doris George.

A funeral service for Kelli will be held 12:30 p.m., Thursday, January 3, 2019 at Northside Baptist Church, Lexington, SC. Interment will follow at Lexington Memorial Park. The family will greet friends prior to the service beginning at 11 a.m. at the church. Barr-Price Funeral Home and Crematorium; Lexington Chapel is assisting the family.

In lieu of flowers, contributions may be made to the girls’ college fund, or to Northside Baptist Church, West Campus, 742 Kitti Wake Dr., West Columbia, SC, 29170.  The family is collecting memories, stories, pictures, and videos of Kelli. Send these to LoveForKelli@gmail.com

Bradley J. Hulick, 64, departed this life much too soon Saturday (Dec. 22, 2018) at Arbor Rose, Tolono.

Brad was born Nov. 22, 1954, in Shelbyville, to Charles “Doc” and Elizabeth “Lib” (Davis) Hulick. He was a graduate of Shelbyville High School and Eastern Illinois University. He was a band director first at Melvin-Sibley schools and then taught band and music at various grade levels for almost 30 years at Unit Seven Schools in Tolono before retiring in 2010. Music and teaching were his passions and his talents. On June 13,1992, he married Jeannette Marie Ingram of Sidney, and in 2002, their beloved daughter, Elizabeth Suzanne, completed their family, along with assorted cats and other pets.

Brad had a love/hate relationship with golfing, played basketball, enjoyed walking and riding his bike around Tolono and was a skillful tennis player who competed in and organized many tennis tournaments in his younger years. Brad appreciated movies from many different genres (everything from subtitled foreign films to Airplane! to Die Hard) and relished watching sports (he was a longtime fan of the Illini, Da Bears, the Bulls, the Pirates and the Cardinals) and traveling. He enjoyed gadgets of every kind, especially if they involved electronics or exercise and were “as seen on TV.“ At one point he owned both an Ab Rocker and a Soloflex machine. He loved animals, especially cats, and babies, and they loved him right back. Brad never met a dessert that he didn’t like. He had impeccable and wide-ranging musical taste, and his greatest joy, besides his family, was introducing others to the music he loved. He had perfect pitch and could play a euphonium (look it up) like nobody’s business.

Brad was strong, gentle, kind, generous, honest, faithful and humble in all that he did. He was a loving and attentive husband, a deeply devoted dad and a caring and loyal son, brother, uncle and friend. The world was a better place with him in it, and he will be deeply missed and forever remembered by his family and friends.

Brad was preceded in death by his parents.

He is survived by his wife and daughter; brother, Chuck (Paula) Hulick of Murray, Ky.; sisters, Suzie (Gary) Robison, Carole (Stu) Hott and Nancy (Bud) Wilhelm, all of Shelbyville; many nieces and nephews, Brian Hulick (Christine Hanks) of Denver, Brock (Allison) Hammat of Brentwood, Tenn., Jennifer Hammat (CJ Delgado) of Fairfax, Va., Aaron Robison (Emily English) and Lisa (Ben) Snoke of Shelbyville, Blake Wilhelm and Christine (Tony) Clark of Villa Grove, Brett (Sue) Wilhem of St. Louis and Lily, Ivy and Violet Cozzolino-Ingram of Urbana; and several great-nieces and great-nephews.

Special thanks and eternal gratitude to his caregivers, especially Clory Figueroa (who is now an adopted Hulick) and the nursing staff at Arbor Rose in Tolono.

Brad’s untimely death was the devastating result of early onset Alzheimer’s. In lieu of other expressions of sympathy, memorials may be made to the Cure Alzheimer’s Fund, the Alzheimer’s Association, the Unity Music Boosters (Unit Seven Schools), First Presbyterian Church of Tolono or Eastern Illinois Foodbank. Brad’s visitation is Friday, Dec. 28, from 4 o 7 p.m. at Freese Funeral Home, Tolono, and his funeral is Saturday, Dec. 29, at 10 a.m. at First Presbyterian Church, Tolo

William M. “Rocky” Rees, 69, of Shippensburg, passed away Friday, December 21, 2018 at home.

He was born June 9, 1949 in Newark, NJ. Rocky was a son of the late Edward and Marion Price Rees.

He was a member of the Our Lady of the Visitation Catholic Church, Shippensburg. Rocky retired from Shippensburg University where he was the Head Football Coach for over 20 years. He also coached football at Newark High School, Bucknell University, Colgate University and Susquehanna University. Rocky was a 1967 graduate of the former Bayley-Ellard High School, he earned his undergraduate degree in 1971 and his master’s degree in 1979, both from West Chester University. He was a past-president and member of the American Football Coaches Association.

He is survived by one daughter, Meghan Diane Rees of Nashville, TN; his companion, Diane Winter of Shippensburg; three brothers, Peter Rees of Bud Lake, NJ, Patrick Rees of Havertown, PA and Matthew Rees of Brick, NJ; and numerous nieces and nephews.

In addition to his parents Rocky was preceded in death by his wife, Patricia Jeanne Gentle Rees who passed away August 14, 1998.

A celebration of life service will be held Saturday, December 29, 2018 in the Luhr’s Center on the campus of Shippensburg University at 1 p.m. Officiating will be Father Dwight Schlaline. Burial will be privately held in the Spring Hill Cemetery. There will be no viewing or visitation prior to the service. A reception will follow the services.

In lieu of flowers memorial contributions may be made to the Rocky and Patty Rees Football Scholarship Fund c/o SU Foundation, 1871 Old Main Dr., Shippensburg, PA 17257.

Online condolences may be expressed at www.fogelsanger-brickerfuneralhome.com.

Joplin D Brock the son of Vickie H (Willie) Bailey and the late Leroy Brock passed away on December 8 2018.Joplin was a attended Wilson High School and graduated with the Class of 1998. He continued his education by attending to Elizabeth City State University in 2003 and later at Norfolk State University in 2014.Joplin loved what he did for a living which was working with children. He was a band teacher at Palmetto Middle School and former assistant director of Barnes at Elizabeth City State University from 2011-2014. He love giving his to sororities. He was a member of the Tuba Phi Tuba Brass Fellowship, Inc.(Alpha Lembela Chapter), Kappa Keppa Psi National Honory Band Fraternity Inc., (Nu lota Chapter), Tau Beta Sigma National Honary Board Sonority, Inc. (lota Phi Chapter), FEAAYM (Petersburg, VA), Golden Key International Honor S.Joplin also made time to serve the Lord. He was affiliated with Macedonia Baptist Church (Newport New, VA), First Gravel Hill Baptist Church (Smithfield, VA), Cornerstone Missionary Baptist Church (Elizabeth City, NC), The Mount (Elizabeth City, NC) and Majority Baptist Church of Florence, SC.He is preceded in death his son Jason Brock, father Leroy Brock and his grandmother Ruth Hyman.Joplin leaves to cherish his fond memories: his beautiful daughter, Lakaiya Brock of the home. His loving mother Vickie H (Willie) Bailey. Four sibling Gregory (Brenda) Hyman, Darrel (Saundra) Hunter of Darlington, sc, Jeannine Hunter of Darlington, SC, and Kevin Leroy (Arminuar) of Florence, SC. Wife Tomisha Brock. Mother-in-law is Alma Holmes-Price and spouse Thomas Giles. Father-in-law is Keith (Susan) Pride. Special thanks goes to his best friends, Mary Ann Hunter, David Williams, James Eley Maurice Jackson, Clarence Goss, and Dr. Walte Susan. Appreciation and gratitude of Tuba Brass Fellowship, Inc., T Sweets, Virginia State University, Norfolk State University, Kappa Kappa Psi, Tau Beta Sigma, Mississippi Valley State University, Elizabeth City State University, and Agape Tours and Travel, and P.O.I.S.O.N. A host of nieces, nephews, relatives and friends.Funeral services will be Monday December 17, 2018 at Majority Missionary Baptist Church. Services are being conducted by Backus Funeral Home.

J. Bradley “Brad” Bone, 65, of Wichita passed away on Fri. Dec. 7, 2018 in Wichita. Brad was born in Dodge City, KS on Mar. 28, 1953 to John G. Bone, Jr. and Jean (Holtfrerich) Bone. Brad graduated high school in Sublette, KS in 1971 and graduated from WSU with a Bachelors degree in Music Education and continued on to obtain three Masters degrees. Brad was the band director at WSU and for many decades, he traveled to Provo, Utah where he worked with the Osmond Family for the Stadium of Fire show. He worked for Senseney Music in Wichita and then for Hume Music. Most recently, he was the National Sales Manager for Rent My Instrument and the Vice President of Stellar Fireworks. Brad is survived by daughter; Victoria “Tori” Bone of Wichita, sisters; Linda (Ed) Stewart of Dodge City and Lianna Dobbins of Thomas, OK. He was preceded in death by his parents and brother-in-law; Randy Dobbins.

Visitation will be on Fri. Dec. 14, 2018 from 6 to 8pm at Lakeview Funeral Home, 12100 E. 13th St. N., Wichita. Celebration of Life service will be 1pm on Sat. Dec. 15, 2018 at Holy Cross Lutheran Church, 600 N. Greenwich Road, Wichita preceded by a viewing from 10 to 11am. The graveside burial service will take place Mon. Dec. 17, 2018 at Maple Grove Cemetery at 2pm, 2350 Matt Down Ln, Dodge City, KS. In lieu of flowers, donations can be made to Holy Cross Lutheran Church, Hungry for Music, or the American Lung Association.

Published in Dodge City Daily Globe on Dec. 12, 2018