High-peak-power pulse generation with GHz repetition rate using a Q-switched 1060nm DBR tapered laser

A. Klehr; B. Sumpf; K. H. Hasler; J. Fricke; A. Liero; Th. Hoffmann; G. Erbert; G. Tränkle

doi:10.1117/12.839958

12 February 2010 High-peak-power pulse generation with GHz repetition rate using a Q-switched 1060nm DBR tapered laser

A. Klehr, B. Sumpf, K. H. Hasler, J. Fricke, A. Liero, Th. Hoffmann, G. Erbert, G. Tränkle

Proceedings Volume 7616, Novel In-Plane Semiconductor Lasers IX; 76161J (2010) https://doi.org/10.1117/12.839958
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

Experimental results from a Q-switched three section tapered laser, with an InGaAs triple quantumwell (TQW) active region, consisting of a 2000 μm long tapered element, a 1000 μm ridge waveguide (RW) section and a 1000 μm long passive grating section with a 6^th order surface grating were fabricated and investigated. For the generation of short optical pulses the tapered section was biased with a dc-current and the RW absorber section was modulated by a 1 GHz sinusoidal current. By biasing the tapered section with 4 A cw current and GHz sinusoidal modulation of the RW section, short pulses of ~75 ps width and a pulse power of 6.3 W corresponding to 470 pJ pulse energy is reached. The Q-switched pulses are single mode with a central emission wavelength of ~1064 nm and a FWHM spectral width ≤ 0.05 nm.

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A. Klehr, B. Sumpf, K. H. Hasler, J. Fricke, A. Liero, Th. Hoffmann, G. Erbert, and G. Tränkle "High-peak-power pulse generation with GHz repetition rate using a Q-switched 1060nm DBR tapered laser", Proc. SPIE 7616, Novel In-Plane Semiconductor Lasers IX, 76161J (12 February 2010); https://doi.org/10.1117/12.839958

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