A passively mode-locked quantum-dot laser operating over a broad temperature range

作者：Mee J K^*; Crowley M T; Patel N; Murrell D; Raghunathan R; Aboketaf A; Elshaari A; Preble S F; Ampadu P; Lester L F

来源：Applied Physics Letters, 2012, 101(7): 071112.

DOI：10.1063/1.4746266

Broad temperature operation is demonstrated from 20 to 110 degrees C in a 5-GHz monolithic two-section InAs/GaAs quantum dot passively mode-locked laser with an optimized absorber to gain section length ratio of 0.11. Stable pulses of less than 19 ps full-width-half-maximum are measured over this entire temperature range. For a grounded absorber, mode-locking from the ground-state occurred over the range 20-92 degrees C, dual-mode lasing involving both ground and excited states from 93 to 98 degrees C and exclusively from the excited-state from 99 to 110 degrees C. The observed broad temperature operation agrees with theoretical analysis based on measured gain and absorption data that predicted improved temperature performance for a short absorber. The results are promising for the development of temperature-insensitive pulsed sources for uncooled applications such as data multiplexing and optical clocking.

• 出版日期2012-8-13