Experimental studies of 1.5 - 1.6 μm high-power asymmetric-waveguide multimode lasers

• Published in: Quantum electronics (Woodbury, N.Y.) N.Y.), 2019-07, Vol.49 (7), p.649-652
• Main Authors: Bagaeva, O.O., Danilov, A.I., Ivanov, A.V., Kurnosov, V.D., Kurnosov, K.V., Kurnyavko, Yu.V., Marmalyuk, A.A., Romantsevich, V.I., Simakov, V.A., Chernov, R.V.
• Format: Article
• Language: English
• Subjects: ASYMMETRY; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; current - voltage, light - current and spectral characteristics; ELECTRIC POTENTIAL; KHZ RANGE; LASER CAVITIES; LASERS; multimode lasers; Pulse duration; Pulse repetition rate; PULSES; PUMPING; radiation spectral width; Semiconductor lasers; SEMICONDUCTOR MATERIALS; Spectral emittance; VISIBLE RADIATION; Voltage; WAVEGUIDES; wavelength 1.5 - 1.6 mm; WAVELENGTHS
• ISSN: 1063-7818; 1468-4799
• DOI: 10.1070/QEL16945

The current - voltage, light - current, and spectral characteristics of high-power multimode semiconductor lasers emitting at wavelengths of 1.5 - 1.6 μm are studied experimentally. It is shown that the cw output power of a C-mount laser with a cavity length of 2.6 mm and a mesa-stripe contact width of 100 μm exceeds 4 W at a pump power of 15 A. The output power in a pulsed regime amounts to 20 W at a pulse duration of 100 ns, a pulse repetition rate of 5 kHz, and a pump current no higher than 80 A. The dependences of the laser wavelength and spectral width on the pump current are presented. The current - voltage and light - current characteristics, as well as the characteristic temperatures of the lasers, are calculated.