DEVELOPMENT OF LASERS OPTIMIZED FOR PUMPING TI:A12O3 LASERS

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 12092
Amount: $498,968.00
Phase: Phase II
Program: SBIR
Awards Year: 1991
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
45 Winthrop Street, Concord, MA, 01742
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Glen A. Rines
 Laser Physicist
 (508) 371-2299
Business Contact
 PETER F. MOULTON
Title: VICE PRESIDENT
Phone: (508) 371-2299
Research Institution
N/A
Abstract
A SINGLE-FREQUENCY, HIGH-ENERGY, TI:A12O3, LIDAR TRANSMITTER IS CURRENTLY UNDER DEVELOPMENT FOR NASA LANGLEY RESEARCH CENTER. THIS SYSTEM REQUIRES TWO DIFFERENT TYPES OF TI:A12O3 PUMP LASER. THE MASTER OSCILLATOR REQUIRES A CW (OR QUASI-CW) PUMP LASER WITH A NOMINAL OUTPUT OF 1-2 W. THE GAIN-SWITCHED, HIGH ENERGY OSCILLATOR REQUIRES A PULSED PUMP WITH A PER-PULSE ENERGY OF ABOUT 2 J TO PRODUCE A 1 J TI:A12O3 OUTPUT. THE GOAL OF THIS SBIR PROJECT IS TO DEVELOP PUMP LASERS THAT ARE OPTIMIZED FOR THESE REQUIREMENTS. AN IDEAL PUMP FOR PULSED TI:A12O3 OSCILLATORS WOULD HAVE A 200-500-NS PULSEWIDTH. OUR DESIGN FOR THE PULSED PUMP LASER ACHIEVES THIS PERFORMANCE GOAL THROUGH AN INNOVATIVE USE OF: A GRADED-REFLECTIVITY-MIRROR UNSTABLE RESONATOR, HIGH-GAIN ND:YLF LASER MATERIAL, A COMPACT FARA-DAY ISOLATOR, AND THE STABLE-RELAXATION-OSCILLATION LASER (SROL)CONCEPT. THE IDEAL PUMP FOR A SPACE-BASED TI:A12O3 MASTER OSCILLATOR IS A DIODE-LASER-PUMPED, CW, ND-LASER WITH EFFICIENT INTRACAVITY SECOND HARMONIC GENARATION (SHG). WITH INVENTIVE DESIGN APPROACHES, LONGITUDINALLY-PUMPED OSCILLATORS MAY BE ABLE TO PRODUCE>1 W OF LASER OUTPUT AT THE SECOND HARMONIC WAVELENGTH USING EXISTING DIODE LASERS. AN ADDITIONAL GOAL OF THE PHASE I EFFORT WILL BE TO DEVELOP A DESIGN FOR SUCH A DEVICE.

* Information listed above is at the time of submission. *

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