NASA SBIR 2020-I Solicitation

Proposal Summary


PROPOSAL NUMBER:
 20-1- S1.01-6161
SUBTOPIC TITLE:
 Lidar Remote Sensing Technologies
PROPOSAL TITLE:
 Watt-Class Diffraction-Limited Narrow Linewidth 8xx nm Diode Lasers
SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Freedom Photonics, LLC
41 Aero Camino
Santa Barbara, CA 93117
(805) 967-4900

Principal Investigator (Name, E-mail, Mail Address, City/State/Zip, Phone)

Name:
Paul Leisher
E-mail:
pleisher@freedomphotonics.com
Address:
41 Aero Camino Santa Barbara, CA 93117 - 3104
Phone:
(805) 967-4900

Business Official (Name, E-mail, Mail Address, City/State/Zip, Phone)

Name:
Daniel Renner
E-mail:
drenner@freedomphotonics.com
Address:
41 Aero Camino Santa Barbara, CA 93117 - 3104
Phone:
(805) 729-0514
Estimated Technology Readiness Level (TRL) :
Begin: 3
End: 6
Technical Abstract (Limit 2000 characters, approximately 200 words)

Freedom Photonics proposes the development of watt-class diffraction-limited diode lasers with extremely high reliability for pumping solid state lasers.  Two target operating wavelengths will be pursued, 808 nm and 885 nm, in order to support the two common pump bands for Nd:YAG microchip lasers.  Diffraction-limited pump diodes enable close matching of the end-pumped gain region to the fundamental cavity mode of the solid state laser.  This approach improves the laser efficiency, power, beam quality, and reliability, all of which are critical for space-based LIDAR systems.  During the Phase 1 effort, Freedom Photonics will design, fabricate, and characterize prototype devices in order to demonstrate the feasibility of our laser technology for reaching Watt-level output power with high electrical-to-optical efficiency and nearly diffraction-limited beam quality.  High reliability will be achieved through mitigation of catastrophic optical mirror damage by means of an advanced facet passivation technology.  Spectral narrowing and wavelength stabilization will allow for maximum pump absorption without the need for strict control of the diode junction temperature.

Potential NASA Applications (Limit 1500 characters, approximately 150 words)

There are several NASA applications which will benefit from our proposed work.  The first use is for pumping the seed laser in the Laser Interferometer Space Antenna (LISA) space-based gravitational wave observatory.  These pump diodes will also find use in LIDAR systems for remote sensing and guidance and navigation systems.  High power, narrow linewidth diodes in this wavelength range are also critical for laser-based gyroscopes for inertial sensing and atomic clocks.

Potential Non-NASA Applications (Limit 1500 characters, approximately 150 words)

1) Seed sources for high energy solid state and fiber lasers

2) Pulsed laser sources for marking

3) LIDAR systems for remote sensing

4) 3D imaging systems for autonomous vehicles

5) Trace gas detection

Duration: 6

Form Generated on 06/29/2020 21:08:00