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Proceedings Paper

Optical parametric oscillator pumped by a coiled multimode fiber amplifier
Author(s): Angus J. Henderson; Marc Norsen; Jeff P. Koplow
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Paper Abstract

We have demonstrated operation of an optical parametric oscillator (OPO) pumped by a coiled multi-mode fiber amplifier. Coiling of multi-mode fiber amplifiers is a simple technique that allows the output from diode-pumped fibers to be substantially increased relative to that from a standard single-mode fiber, while maintaining the diffraction-limited beam quality. Pulse energies from such fiber amplifiers are high enough to drive nonlinear optical processes. Here we report efficient frequency down-shifting of such a device using an OPO. A diode-pumped Yb-doped fiber was used to amplify 1 microjoule, 20 nanosecond pulses from a 1.064μm Nd:YVO4 laser to a level of up to 107 microjoules in a single transverse mode, polarized beam. The 6m-length fiber had a 200 micron diameter cladding and a 25 micron core. An unpolarized output of 5.6 Watts was measured for 13 Watts of 976nm diode pump input. Oscillation of a periodically-poled lithium niobate (PPLN) OPO was observed with an oscillation threshold pump pulse energy of 31 microjoules. Up to 0.63 Watts of 1.5μm OPO signal output was measured with 2.6 Watts of incident pump, at a repetition rate of 24kHz. Tuning of the OPO signal wavelength was performed between 1.5 and 1.6μm.

Paper Details

Date Published: 14 June 2004
PDF: 6 pages
Proc. SPIE 5337, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications III, (14 June 2004); doi: 10.1117/12.529657
Show Author Affiliations
Angus J. Henderson, Aculight Corp. (United States)
Marc Norsen, Aculight Corp. (United States)
Jeff P. Koplow, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 5337:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications III
Kenneth L. Schepler; Dennis D. Lowenthal, Editor(s)

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