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 Expert  107587

Expert in Photonics, Semiconductors

Available for your Consulting and Expert Witness Needs

Maryland (MD)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise:

Listed with other top experts in: 

COMPOUND SEMICONDUCTOR MATERIAL; III-V SEMICONDUCTOR MATERIAL. Expert began his work on compound semiconductors in the early days of their development. He did some of the pioneering work on photoeffects, electrical and thermal transport, and scattering in GaAs as well as in Ge-Si alloys and Bi-Sb alloys. For this work, Ave was awarded the RCA Laboratories Outstanding Research Achievement Award. His work included thermoelectric and thermomagnetic effects: the phenomena and their applications to cooling and to power generation (in the Voyager space probes).

Subsequently, as a Visiting Professor at Princeton, Ave's interest focused on surface properties of GaAs and GaAlAs semiconductors. Upon joining ITT, he assumed responsibility for the development of photonic active components for fiber-optics. These included injection lasers, LEDs and avalanche photodiodes, the first of GaAs/GaAlAs, and then InP/InGaAsP.

Ave managed the changeover from growth by liquid-phase epitaxy (LPE) to epitaxial metal-organic chemical vapor deposition (MOCVD). The latter technology had its primary application in the growth of GaAs/GaAlAs photocathodes, yet it was also used to demonstrate the fabrication of LEDs.

PHOTONICS TECHNOLOGY; PHOTONICS R&D MANAGEMENT. Ave was responsible for developing the various active components (injection lasers, LEDs, and avalanche photodiodes) and passive components (various couplers and cable terminations) for fiber optic communication. Special mention should be made of a long-wavelength edge-emitting InP/InGaAsP LED developed by Ave at ITT. For several years it was the fastest such LED and launched the highest power into single-mode fibers and was installed in a number of systems around the world.

NIGHT-VISION IMAGE TUBE; PHOTOEMISSION; PHOTOCATHODE; MICROCHANNEL PLATE. While still responsible for fiber optics components, Ave involved himself directly to solve critical problems of bonding GaAs photocathodes to the glass face plates. His analysis of the stresses, followed by experimental verification, resulted in a patented new controlled process that facilitated ITT becoming the technical leader in the development and production of Generation III GaAs photocathodes and night vision tubes. Subsequent changes conceived and implemented by Ave (and a team under him), resulted in a series of patents on very precise control of the temperature required during the 'heat cleaning' step in the fabrication of the photocathode. The introduction of this new manufacturing step led to a considerable enhancement of the product yield of photocathodes. This process, using the temperature dependence of the bandgap, found numerous other applications. It earned Ave the ITT Worldwide Corporate Gold Quality Team Award.

Ave also conceived of placing a frame-transfer CCD inside the tube immediately behind the photocathode, eliminating both the microchannel plate and the phosphor screen, and displaying the image on a monitor. The feasibility of this was demonstrated and published in 1992.

SINGLE-CRYSTAL THIN FILM; SINGLE CRYSTAL GROWTH. Ave is knowledgeable of the epitaxial growth of single-crystal thin films and their chemical and structural characterization. He has grown such compound semiconductor films by various epitaxial methods and characterized their composition by ESCA, Auger, microprobe, and EDX techniques. He measured their crystallinity and residual stresses by X-ray diffractometry and topography.


compound semiconductor material


III-V semiconductor material


microchannel plate


night-vision image tube








photonics research-and-development management


photonics technology




single crystal growth


atomic layer deposition

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Philadelphia, Pennsylvania;  Allentown, Pennsylvania;  Reading, Pennsylvania;  Lancaster, Pennsylvania;  Baltimore, Maryland;  Frederick, Maryland;  Camden, New Jersey;  Vineland, New Jersey;  Wilmington, Delaware;  and Alexandria, Virginia.

Year   Degree   Subject   Institution  
1961   PhD   Chemical Physics   Harvard University  
1953   MA   Physics   Harvard University  
1951   BS   Chemistry   University of Michigan, Ann Arbor  

Work History:
Years   Employer   Title  

1995 to 2000


Amtech Engineering Corp.




1994 to 1995




COO and General Manager


1991 to 2000


Department of Materials Science and Engineering,


Adjunct Professor


1978 to 1994





1989 to 1994



Senior Scientific Fellow & Acting Chief Scientist


1987 to 1989



Fellow of the Technical Staff


1982 to 1987


Optical and Optoelectronic Components




Career Accomplishments:

He is a member of the American Physical Society, IEEE, the Society of Photo-Optical Instrumentation Engineers (SPIE), and the Materials Research Society.


Ave won the RCA Laboratories Outstanding Research Achievement Award in 1966 and ITT's Worldwide Corporate Gold Quality Team Award in 1991.

Publications and Patents Summary

He is the author of eight US and two foreign patents, a book chapter, and 43 technical publications.

Selected Publications and Publishers  
 - Proceedings of the IRIS/IRIA Symposium on Infrared Countermeasures  

Consulting Services:
Recent Client Requests:
  • Night vision expert for consulting on night vision device design and production.
  • Expert in photocathode bonding to glass for consulting on gaas-to-AVG bonding method.
  • Expert in alkali antimonite photocathode for consulting on production process.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

International Experience:
Country / Region   Summary
UK, Germany, Israel   Ave participated in technology transfer arrangements with STC in the UK and with Standard Lorenz in Germany. He also was active in joint technical work in imaging technology with Raphael Laboratories in Israel.

Language Skills:
Fluent in Hebrew, Ave can also understand German and Polish. Ave participated in technology transfer arrangements with STC in the UK and with Standard Lorenz in Germany. He also was active in joint technical work in imaging technology with Raphael Laboratories in Israel.


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