Cryogenically-Cooled High Average Power Picosecond Ytterbium Lasers

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-09ER85584
Agency Tracking Number: 90051
Amount: $99,506.00
Phase: Phase I
Program: SBIR
Awards Year: 2009
Solitcitation Year: 2010
Solitcitation Topic Code: 04 d
Solitcitation Number: DE-FOA-0000350
Small Business Information
Kapteyn-murnane Laboratories, Inc.
1855 South 57th Court, Boulder, CO, 80301
Duns: 160115093
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Hsiao-hua Liu
 Dr.
 (303) 544-9068
 hliu@kmlabs.com
Business Contact
 Sterling Backus
Title: Dr.
Phone: (303) 544-9068
Email: sbackus@kmlabs.com
Research Institution
N/A
Abstract
The electron source at the front end of modern accelerators, also know as an electron ¿gun,¿ is a laser-driven photocathode. This technology requires the development of a laser with the required pulse characteristics and average power. This project will develop a compact and robust laser system capable of generating pulses with 1 µm wavelength, 10-100 µJ pulse energy, and tunable pulse width between 10 and 50 ps, at 1-100 MHz repetition rate. The approach will involve the development of a hundred watt, level oscillator-amplifier laser system, based on ytterbium-doped crystals, that operates in the required wavelength range. Phase I will begin with the development an analytical model and numerical codes to determine the limiting factors for high-average-power, cryogenically-cooled mode-locked oscillators. A mode-locked oscillator will be built, and its parameters and performance will be measured. The analytical model and numerical codes will be benchmarked with the measured data before proceeding with the design of the full oscillator-amplifier system, which will be implemented in Phase II. Commercial Applications and other Benefits as described by the awardee: The pulsed laser system should have unprecedented high repetition-rate and high average-power characteristics. In addition to its application to photoinjectors in modern accelerators, the laser also should find uses in basic science (e.g., for high-fidelity studies of materials and molecular dynamics), industry (such as for precision laser micromachining), and medicine.

* information listed above is at the time of submission.

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