| Octave Bandwidth Optical Modulator. |
FEB 1973 |
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| Authors:
Kungta K. Chow; John J. Younger; William B. Leonard; LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CA PALO ALTO RESEARCH LAB
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 | This Octave Bandwidth Modulator Study was an advanced development program aimed at the design, development, fabrication, and delivery of two microwave bandpass laser modulators. One modulator was optimized for operation at 0.53 micrometer, the other at 1.06 micrometers. Design goals for the modulators were: a 1-Gbit/sec data rate capability, using a QPSK format; a 90% modulation depth for 0.53-micrometer radiation at a 5-W rf drive power level; and a 75% ... |
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| Multimegavolt Modulator Study. |
AUG 1970 |
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| Authors:
J. J. Moriarty; H. I. Milde; J. E. Hipple; ION PHYSICS CORP BURLINGTON MA
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| Energy storage and switching systems related to modulator operation at voltages in excess of one million volts are discussed. Two-basic switch-closure schemes are treated in detail: the trigatron and the laser-triggered switch. Experimental determinations of multimegavolt switching range and spark gap erosion are described. Test results are presented for a high voltage pulse generator which can be controlled from ground potential by means of optical telemetry. A 1-MV prototype of ... |
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| Solid-State BWO Modulator. |
08 DEC 1969 |
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| Authors:
M. H. Mott; D. B. Kavanagh; NAVAL ELECTRONICS LAB CENTER SAN DIEGO CA
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| An S-band linear FM (chirp) signal generator, utilizing a backward wave oscillator (BWO) and a solid-state BWO modulator-driver circuit, was developed as part of an experimental high-range-resolution radar. The modulator-driven BWO was found to have a 3.5 to 2.9 GHz linear sweep with a 600-MHz bandwidth; a 0.300 microsecond pulsewidth; and a pulse compression ratio or time-bandwidth product of 180. In addition, it has the capability of operating to a ... |
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| High Power Modulator Techniques (SCR). |
NOV 1968 |
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| Authors:
R. A. Smith; WESTINGHOUSE ELECTRIC CORP BALTIMORE MD SURFACE DIV
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| Development and test of a 65KV Silicon Controlled Rectifier demonstrates the application of solid state devices and their inherent reliability in high power pulse modulator techniques. The design exploits the high voltage and high current capabilities of the SCR. Eighty devices in series yield a minimum holdoff voltage of 65KV; the test modulator switches pulse currents of 375 amperes although the SCRs have a 1000 ampere minimum peak pulse current ... |
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| BIREFRINGENCE IN AMORPHOUS SOLIDS WITH APPLICATION TO SOLID LIGHT MODULATORS. |
15 JAN 1967 |
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| Authors:
S. Bernstein; J. Minkoff; M. Arm; COLUMBIA UNIV NEW YORK ELECTRONICS RESEARCH LABS
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| The theory of birefringence in a transparent, amorphous solid is developed from fundamental principles in order to obtain a design formulation for spatial light modulators that will operate at 100 MHz center frequency with at least 50 percent bandwidth. Both longitudinal and shear wave elasto-optical interactions are treated. Relations for the phase modulation index and the diffracted light intensity and polarization, as functions of the modulator parameters, are presented for ... |
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| SOLID STATE TECHNIQUES FOR MODULATING OPTICAL WAVES. |
OCT 1966 |
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| Authors:
B. K. Yap; W. E. Bicknell; SYLVANIA ELECTRONIC SYSTEMS-EAST WALTHAM MA APPLIED RESEARCH LAB
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| This is the final report of a project to construct four O-3 GHz traveling-wave modulators which achieve 30 percent optical modulation with 5-watts drive power over the bandwidth. This report is an account of the design, fabrication, and testing of the four modulators. (Author) |
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| ELECTRO-OPTICAL SIGNAL PROCESSING TECHNIQUES FOR PHASED ARRAY ANTENNAS. |
01 APR 1966 |
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| Authors:
A. Aimette; COLUMBIA UNIV NEW YORK ELECTRONICS RESEARCH LABS
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| The investigation of array antenna electro-optical signal processors continues with emphasis placed on the development of wideband solid light modulator. Theoretical considerations are presented describing the characteristics of both longitudinal and shear mode solid light modulators operating at 80 and 100 mHz. These characteristics include the effects of applied voltage and internal refraction on the light modulation and lead to a nomographic method for determining optimal transducer dimensions, in the ... |
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| A 10 KC KERR CELL MODULATOR FOR THE PRODUCTION OF REPETITIVE GIANT LASER PULSES. |
1963 |
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| Authors:
John C. Gonzalez; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| The output from a conventional laser is a spontaneous burst of radiation which lasts about one microsecond. If now the reflectivity of one of the two 'mirrors' in the system is controllable, it is possible to develop laser system conditions which permit the generation of high peak-power pulses with a pulse width of about 30 nanoseconds. Such a system utilizes the principle of regeneration modulation and has been successfully applied ... |
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