Room temperature operation of ultra-short quantum cascade lasers with deeply etched Bragg mirrors
Authors:
- 9 June 2005
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 41 (12) , 704-705
Abstract
Mid-infrared GaAs based bound-to-continuum quantum cascade microlasers with ridge waveguide geometry are fabricated by the monolithic integration of deeply etched semiconductor-air Bragg mirrors. Devices with ultra-short cavities of 50 and 150 µm can be operated near room temperature (260 K) or at room temperature (300 K), respectively. 50 µm-long devices show singlemode emission up to relatively high drive currents due to the large mode spacing of about 30 cm−1 (340 nm).Keywords
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