Semiconductor disk laser at 2.05 μm wavelength with <100 kHz linewidth at 1 W output power

We report on an optically pumped single-mode GaSb-based semiconductor disk laser (SDL) emitting at 2.05 μm at an output power of 960 mW (1100 mW) with a side-mode suppression of better than 30 dB (20 dB). A linewidth of 60 kHz (sampling time: 100 μs) was measured at an output power of 960 mW. This improvement in output power over previous reports, which was achieved via a careful design of the SDL cavity paying close attention to the spatial overlap between cavity mode and pump spot, makes this class of SDL particularly attractive for remote sensing and optical free-space communication.

[1]  J. Hopkins,et al.  High‐brightness long‐wavelength semiconductor disk lasers , 2008 .

[2]  Joachim Wagner,et al.  Continuous-wave room-temperature operation of a 2.8 μm GaSb-based semiconductor disk laser. , 2011, Optics letters.

[3]  Martin D. Dawson,et al.  Thermal management, structure design and integration considerations for vecsels , 2010 .

[4]  D. Burns,et al.  Actively stabilized single-frequency vertical-external-cavity AlGaAs laser , 1999, IEEE Photonics Technology Letters.

[5]  Joachim Wagner,et al.  Long‐Wavelength GaSb Disk Lasers , 2010 .

[6]  Martin D. Dawson,et al.  Semiconductor disk lasers for the generation of visible and ultraviolet radiation , 2009 .

[7]  Joachim Wagner,et al.  2 μm semiconductor disk laser with a heterodyne linewidth below 10 kHz. , 2011, Optics letters.

[8]  Joachim Wagner,et al.  Sub-MHz-Linewidth 200-mW Actively Stabilized 2.3-μm Semiconductor Disk Laser , 2011, IEEE Photonics Technology Letters.

[9]  D. Davies,et al.  Limitations and noise in interferometric systems using frequency ramped single-mode diode lasers , 1986 .

[10]  G. Stephan,et al.  Laser line shape and spectral density of frequency noise (9 pages) , 2005 .

[11]  Zong-Long Liau,et al.  Semiconductor wafer bonding via liquid capillarity , 2000 .

[12]  Gianluca Galzerano,et al.  Frequency- and intensity-noise measurements of a widely tunable 2-μm Tm-Ho: KYF laser , 2006, IEEE Trans. Instrum. Meas..

[13]  L. Cerutti,et al.  Single-frequency tunable Sb-based VCSELs emitting at 2.3 /spl mu/m , 2005, IEEE Photonics Technology Letters.