DEVELOPMENT OF A MICROSECOND-PULSE NEODYMIUM LASER

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$49,656.00
Award Year:
1987
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
5096
Agency Tracking Number:
5096
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
45 Winthrop Street, Concord, MA, 01742
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
Dr. Peter F. Moulton
Investigator
() -
Research Institution:
n/a
Abstract
THE TI:SAPPHIRE SOLID STATE LASER IS ONE OF THE MORE PROMISING SOURCES FOR SPACE-BASED DIAL SYSTEMS OPERATING IN THE NEAR-INFRARED REGION FROM 700-1000 NM. WHEN PUMPED BY APULSED, FREQUENCY-DOUBLED NEODYMIUM (ND) LASER, THE TI: SAPPHIRE LASER ACHIEVES NEARLY QUANTUM-LIMITED CONVERSION OF PUMP ENERGY INTO OUTPUT ENERGY. THE PULSE LENGTH OF CONVENTIONAL ND LASERS OPERATED IN THE FLASHLAMP-PUMPED, Q-SWITCHED MODE IS, HOWEVER, MUCH SHORTER THAN NECESSARY FOR PUMPING THE TI-SAPPHIRE SYSTEM. THE HIGH PEAK POWER ASSOCIATED WITH THE SHORT LENGTH LIMITS THE PUMP ENERGY DELIVERABLE PER UNIT AREA, BECAUSE OF OPTICAL DAMAGE TO THE SURFACE OF THE SAPPHAIRE CRYSTAL. THE INTENT OF THIS PROPOSAL IS TO BEGIN THE DEVELOPMENT OF ANENERGETIC (1 JOULE AND GREATER), FREQUENCY-DOUBLED ND LASER WITH A PULSE LENGTH ON THE ORDER OF 1-2 MICROSECONDS. IF A MICROSECOND PUMP SOURCE COULD BE DEVELOPED, THE ENERGY OUTPUT FROM A GIVEN APERATURE SIZE OF THE TI:SAPPHIRE GAIN MEDIUM COULD BE SIGNIFICANTLY INCREASED. THE PROPOSED PHASEI EFFORT WOULD INCLUDE A STUDY OF DIFFERENT TECNIQUES FOR GENERATING MICROSECOND-DURATION PULSES, AN EXPERIMENTAL IMPLEMENTATION OF ONE PARTICULAR TECHNIQUE AND AN ASSESSMENTOF SECOND-HARMONIC GENERATION EFFICIENCIES ATTAINABLE WITH KNOWN NONLINEAR CRYSTALS.

* information listed above is at the time of submission.

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