Published March 26, 2012
| Published
Journal Article
Open
Octave-spanning ultrafast OPO with 2.6-6.1µm instantaneous bandwidth pumped by femtosecond Tm-fiber laser
Chicago
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Abstract
We report the extension of broadband degenerate OPO operation further into mid-infrared. A femtosecond thulium fiber laser with output centered at 2050 nm synchronously pumps a 500-μm-long crystal of orientation patterned GaAs providing broadband gain centered at 4.1 µm. We observe a pump threshold of 17 mW and output bandwidth extending from 2.6 to 6.1 µm at the −30 dB level. Average output power was 37 mW. Appropriate resonator group dispersion is a key factor for achieving degenerate operation with instantaneously broad bandwidth. The output spectrum is very sensitive to absorption and dispersion introduced by molecular species inside the OPO cavity.
Additional Information
© 2012 Optical Society of America. Received 20 Dec 2011; revised 10 Feb 2012; accepted 13 Feb 2012; published 13 Mar 2012. The authors thank Tim Brand for fabricating GaAs crystals designed for operation at Brewster angle. We gratefully acknowledge support from IMRA, the US Office of Naval Research, NASA, Air Force Office of Scientific Research, Agilent Technologies, Stanford Medical School, Stanford Woods Institute, and Sanofi Aventis.Attached Files
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Additional details
- Eprint ID
- 86940
- Resolver ID
- CaltechAUTHORS:20180608-144456654
- IMRA
- Office of Naval Research (ONR)
- NASA
- Air Force Office of Scientific Research (AFOSR)
- Agilent Technologies
- Stanford Medical School
- Stanford Woods Institute for the Environment
- Sanofi-Aventis
- Created
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2018-06-11Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field