Passively mode-locked Tm,Ho:YAG laser at 2 µm based on saturable absorption of intersubband transitions in quantum wells
Passively mode-locked Tm,Ho:YAG laser at 2 µm based on saturable absorption of intersubband transitions in quantum wells
Yang, K.; Bromberger, H.; Ruf, H.; Schäfer, H.; Neuhaus, J.; Dekorsy, T.; Villas-Boas Grimm, C.; Helm, M.; Biermann, K.; Künzel, H.
We report the first demonstration of a solid state laser passively mode-locked through the saturable absorption of short-wavelength intersubband transitions in doped quantum wells: a continuous wave Ti:sapphire laser end-pumped Tm,Ho:YAG laser at the center wavelength of 2.091 μm utilizing intersubband transitions in narrow In0.53Ga0.47As/Al0.53As0.47Sb quantum wells. Stable passive mode-locking operation with maximum average output power of up to 160 mW for 2.9 W of the absorbed pump power could last for hours without external interruption and a mode-locked pulse with duration of 60 ps at repetition rate of 106.5 MHz was generated.
Keywords: mode locking; intersubband transition; saturable absorber; quantum well; solid state laser
-
Optics Express 18(2010)7, 6537-6544
DOI: 10.1364/OE.18.006537
Cited 42 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-13890