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LASERS

Award Information

Agency:
Department of Energy
Branch:
N/A
Award ID:
1233
Program Year/Program:
1984 / SBIR
Agency Tracking Number:
1233
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
OPTRA, Inc
461 Boston Street Topsfield, MA 01983-
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1984
Title: LASERS
Agency: DOE
Contract: N/A
Award Amount: $49,000.00
 

Abstract:

A PROGRAM TO DEVELOP STABILIZED FABRY-PEROT ETALONS (CONFOCAL AND PLANE-MIRROR), BASED ON THE APPLICATION OF STABILIZED 2-FREQUENCY LASERS, IS PROPOSED. THE 2-FREQUENCY LASER HAS BE DEMONSTRATED TO HAVE EXCELLENT FREQUENCY STABILITY. ITS OUTPUT CONSISTS OF ORTHOGONALLY POLARIZED COL-LINEAR BEAMS WHICH DIFFER IN FREQUENCY BY A TYPICAL VALUE OF 250 KHZ. THIS PERMITS THE RAPID COMPARISON OF DIFFERENTIAL OPTICAL PATH DIFFERENCES, WHICH IN TURN MAKES POSSIBLE A SERVO SYSTEM WITH A BANDWIDTH (OR STIFFNESS) LIMITED ONLY BY THE MECHANICAL PROPERTIES OF THE CONTROL ELEMENTS. THE HIGH OPERATING FREQUENCY AND RADIANCE OF THE LASER BEAM COMBINE TO ALLOW CONTROL RESOLUTIONS AT THE FUNDAMENTAL SHOT-NOISE LIMIT, WITH A VIRTUALLY UNLIMITED CONTROL RANGE. THE PROPOSED TECHNIQUE IS APPLICABLE TO THE FREQUENCY STABILIZATION OF BOTH CONFOCAL AND PLANE-MIRROR FABRY-PEROT ETALONS, AND CAN ALSO BE USED TO VERY PRECISELY CONTROL THE PARALLELISM OF THE FLAT FABRY-PEROT MIRRORS. IN ORDER TO ACHIEVE HIGH EFFICIENCY IN A PLANE-MIRROR FABRY-PEROT ETALON, IT IS SHOWN THAT DISSIPATIVE LOSSES MUST BE MINIMIZED, AND THAT THE MIRROR REFLECTANCE MUST BE VERY PRECISELY CONTROLLED. THE DESIGN AND FABRICATION OF A PLANE-MIRROR FABRY-PEROT ETALON WITH A FINESSE OF 20 AND A PEAK TRANSMISSION OF 95% IS PROPOSED.

Principal Investigator:

Michael hercher
STAFF ENGINEER

Business Contact:

Small Business Information at Submission:

Optra, Inc.
1727 Revere Beach Pkwy. Everett, MA 02149

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No