NASA 1996 SBIR Phase I


PROPOSAL NUMBER : 96-1 10.01-2299

PROJECT TITLE : Ultra-Stable Diode-Pumped Laser for Precision Metrology

TECHNICAL ABSTRACT (LIMIT 200 WORDS)

We propose a new resonator configuration for single-frequency, diode-pumped, solid state lasers to produce sources suitable for precision laser metrology. The technique is generally applicable to birefringent solid state laser gain media, including many materials in common use. The primary objective of the program is to perform a proof-of-principle implementation of the active-filter resonator in a 1.047-micron Nd:YLF source. In addition, passive stabilization means will be developed in order to meet NASA requirements for long-term stability. The proposed configuration has advantages compared to monolithic structures because of superior tolerance to fluctuations in pump power and ambient conditions, and may be operable without the need for external reference sources. The Phase I program is expected to yield a preliminary design for an integrated source. With the extension of the technique to other transitions in Nd:YLF (e.g., 1.3 micron for fiber-based sensors), as well as to other gain media, it is hoped that the proposed program will lead to a family of ultra-stable sources for a variety of metrological applications.
POTENTIAL COMMERCIAL APPLICATIONS
Commercial applications include coherent systems for precision metrology, precision interferometry, holography, and remote sensing. Monitoring of wind fields is a particularly important example of coherent remote sensing. The proposed source would also be used as a master oscillator for injection seeding in LIDAR systems and general scientific applications.
NAME AND ADDRESS OF PRINCIPAL INVESTIGATOR
Mr. John H. Flint
Schwartz Electro-Optics Inc.
45 Winthrop St., Concord, MA 01742
NAME AND ADDRESS OF OFFEROR
Schwartz Electro-Optics Inc.
45 Winthrop St., Concord, MA 01742