External-cavity high-power dual-wavelength tapered amplifier with tunable THz frequency difference

Mingjun Chi; Ole Bjarlin Jensen; Paul Michael Petersen

doi:10.1117/12.908248

8 February 2012 External-cavity high-power dual-wavelength tapered amplifier with tunable THz frequency difference

Mingjun Chi, Ole Bjarlin Jensen, Paul Michael Petersen

Proceedings Volume 8241, High-Power Diode Laser Technology and Applications X; 824114 (2012) https://doi.org/10.1117/12.908248
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

A tunable 800 nm high-power dual-wavelength diode laser system with double-Littrow external-cavity feedback is demonstrated. The two wavelengths can be tuned individually, and the frequency difference of the two wavelengths is tunable from 0.5 to 5.0 THz. A maximum output power of 1.54 W is achieved with a frequency difference of 0.86 THz, the output power is higher than 1.3 W in the 5.0 THz range of frequency difference, and the amplified spontaneous emission intensity is more than 20 dB suppressed in the range of frequency difference. The beam quality factor M² is 1.22±0.15 at an output power of 1.35 W. The simultaneous oscillation of the two wavelengths is under test by the sumfrequency generation experiment in a bismuth triborate (BIBO) nonlinear crystal.

Citation Download Citation

Mingjun Chi, Ole Bjarlin Jensen, and Paul Michael Petersen "External-cavity high-power dual-wavelength tapered amplifier with tunable THz frequency difference", Proc. SPIE 8241, High-Power Diode Laser Technology and Applications X, 824114 (8 February 2012); https://doi.org/10.1117/12.908248

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