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Monolithic Rare Earth Doped PTR Glass Laser

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
OptiGrate Corp.
562 South Econ Cir Oviedo, FL 32765-
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2011
Title: Monolithic Rare Earth Doped PTR Glass Laser
Agency: NASA
Contract: NNX11CA87C
Award Amount: $599,999.00


The main goal of the project is to demonstrate the feasibility of a monolithic solid state laser on the basis of PTR glass co-doped with luminescent rare earth ions. The main feature of this new complex material is its ability to be simultaneously an active laser medium and a phase photosensitive medium. That way the same piece of material can be used as laser gain element and a monolithic laser resonator produced by the recorded in that volume Bragg gratings (VBGs). A series of PTR glasses co-doped with rare-earth ions (Nd, Yb and Er) was fabricated. It was shown that those glasses possess both high efficiency of luminescence and photosensitivity (photo-thermo-induced change of refractive index). A technology of the recording of volume Bragg gratings in each of these new PTR glasses was developed and controllable diffraction efficiency between 10 and 99% was demonstrated. A laser was demonstrated in Nd-doped PTR glass plate using an external Fabry-Perot resonator based on two plane dielectric mirrors with longitudinal pumping by laser diodes at 808 nm. Lasing and narrowing of spectrum down to ~20 pm is demonstrated when one of the mirrors was replaced by a high efficiency VBG.

Principal Investigator:

Christine Spiegelberg
Principal Investigator

Business Contact:

Igor Ciapurin
Business Official
Small Business Information at Submission:

OptiGrate Corporation
3267 Progress Drive Orlando, FL -

EIN/Tax ID: 522197299
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No