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Opt Lett. 1998 Oct 1;23(19):1517-9.

Mid-infrared difference-frequency generation source pumped by 1.1-1.5 micrometer dual-wavelength fiber amplifier for trace-gas detection.

Author information

1
Optical Sciences Division, Naval Research Laboratory, Washington, DC 20375-5672, USA. lew.goldberg@nrl.navy.mil
2
Rice U, Houston, TX

Abstract

Continuous-wave mid-infrared radiation near 3.5 micrometers is generated by difference-frequency mixing of the output of a compact 1.1-1.5 micrometer dual-wavelength fiber amplifier in periodically poled LiNbO3. The diode side-pumped amplifier is constructed with double-cladding Yb-doped fiber followed by single-mode Er/Yb codoped fiber. Output powers of as much as 11 microW at 3.4 micrometers are obtained, and spectroscopic detection of CH4 and H2CO is demonstrated.

PMID:
11763099
[Indexed for MEDLINE]

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