Research on Microwave Amplification in Semiconductors.

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Abstract:

The significance of this research to the Air Force lies in the following three conclusions 1 It is not possible to improve upon the high frequency amplifier performance of existing transistor types of developing a Coherent-Beam-Of-Light-Transistor COBOLT, that is, a transistor that employs an injection-modulated injection laser as emitter 2 A COBOLT might be of considerable interest as an electronically tuneable microwave resonance element 3 Higher frequencies than by injection modulation might be achievable by electrooptic modulation of injection laser light, with somewhat uncertain noise properties of the device. The objective of this research had been to study theoretically the high-frequency properties of a COBOLT, especially to check the expectation that such a device might make possible a drastic extension of the frequency range of transistor amplifiers.

Author(s):
Kroemer, Herbert
Author Organization(s):
COLORADO UNIV AT BOULDER DEPT OF ELECTRICAL ENGINEERING
Descriptive Note:
Final rept. Jan-Sep 72,
Pagination:
0068

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFAL-TR-73-7
Contract/Grant Number(s):
F33615-70-C-1129
Task Number(s):
609801
Project Number(s):
AF-6098
Monitor Series:
TR-73-7
 Subject Terms
Communities of Interest:
Advanced Electronics
Descriptor(s):
*MICROWAVE AMPLIFIERS), (*TRANSISTOR AMPLIFIERS, LASERS, MODULATION, LIGHT, ELECTROOPTICS, FIELD EFFECT TRANSISTORS, RESONANCE, NOISE, TUNING DEVICES, MICROWAVE FREQUENCY, GALLIUM ARSENIDES, RESONANT FREQUENCY, PHOTONS, ELECTRONS, DENSITY
Field(s)/Group(s):
Electrooptical and Optoelectronic Devices
Keyword(s):
BEAM OF LIGHT TRANSISTORS, BOLT(BEAM OF LIGHT TRANSISTOR), *COBOLT(COHERENT BEAM OF LIGHT TRANSISTOR), COHERENT BEAM OF LIGHT TRANSISTOR, FREQUENCY RESPONSE, HETEROJUNCTIONS, INJECTION LASERS
Report Date:
1973 Feb 01