High Efficient Volume Holographic Elements for High Power Lasers

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$0.00
Award Year:
2004
Program:
STTR
Phase:
Phase I
Contract:
W31P4Q-04-C-R157
Award Id:
68710
Agency Tracking Number:
00ST1-0046
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
4028 Laurel Branch Lane, Orlando, FL, 32817
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
120669085
Principal Investigator:
VadimSmirnov
Research Scientist
(407) 617-2869
vadim@l-p-tech.com
Business Contact:
LeonidGlebov
President
(321) 438-4639
leon@l-p-tech.com
Research Institute:
University of Central Florida/CREOL
Mary Stanley
P.O. Box 162700
Orlando, FL, 32816
(407) 823-2836
Nonprofit college or university
Abstract
In Phase I, LPTI proved f the concept of high efficiency narrow-band mirror in photo-thermo-refractive glass (PTRG) for high power Nd:YAG laser. In Phase II, a number of photo-thermo-refractive diffractive optical elements (PTR HOEs) including both reflecting and transmitting volume gratings, will be fabricated for different types of high power lasers, and high power beam control will be demonstrated. A technology of PTRG blanks up to 25 mm,e25 mm,e5 mm with the refractive index fluctuations less than 2,e10-5 (20 ppm), an induced refractive index greater than 1000 ppm, and a photosensitivity greater than 1 ppm mJ 1 cm2 will be developed. A setup for the recording of PTR HOEs with 12 mm diameter and variations of diffraction across the aperture less than 10% will be designed, constructed, and tested. The effect of glass technology and holographic processing on insertion losses and laser-induced damage will be studied. The narrow-band diffractive mirrors and deflectors for different types of high power lasers will be made with the following parameters: diameter up to 12 mm, diffraction efficiency greater that 90 %, thermal stability up to 400¿XC, laser stability in CW mode up to 100 kW/cm2, for 10 ns pulses up to 10 J/cm2.

* information listed above is at the time of submission.

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