10 November 2016 Temperature characteristics of tilted wave lasers
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We report on the temperature characteristics of edge-emitting tilted wave lasers (TWL) composed of a thin active waveguide (0.7  μm) optically coupled to a thick passive waveguide (26  μm). The active region is based on four 1040-nm InGaAs/GaAs quantum wells. The 2-mm-long and 50-μm-wide broad area lasers show characteristic temperature of 115 K and lasing up to 120°C in the continuous-wave mode. The maximal pulsed output power as high as 40 W was achieved being limited by the available current source. Vertical far-fields of the TWLs consist of two tilted narrow lobs (2.4 deg full width at half maximum each), which contain >70% of the total output power. The tilt angle of the lobes slightly increases with the temperature (by 1 deg/40°C) due to the transverse mode hopping caused by the temperature-induced changes of the waveguide refractive indices.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Mikhail V. Maximov, Nikita Y. Gordeev, Yuri M. Shernyakov, Alexey S. Payusov, Nikolay A. Kalyuzhnyy, Sergey A. Mintairov, Marina Kulagina, Alexey E. Zhukov, Vitaly A. Shchukin, Nikolai N. Ledentsov, "Temperature characteristics of tilted wave lasers," Optical Engineering 55(11), 116102 (10 November 2016). https://doi.org/10.1117/1.OE.55.11.116102 . Submission:

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