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Room-temperature continuous-wave quantum cascade lasers grown by MOCVD without lateral regrowth

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9 Author(s)
Zhijun Liu ; Dept. of Electr. Eng., Princeton Univ., NJ ; Wasserman, D. ; Howard, S.S. ; Hoffman, A.J.
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We report on room-temperature continuous-wave (CW) operation of lambda~8.2 mum quantum cascade lasers grown by metal-organic chemical vapor deposition without lateral regrowth. The lasers have been processed as double-channel ridge waveguides with thick electroplated gold. CW output power of 5.3 mW is measured at 300 K with a threshold current density of 2.63 kA/cm2. The measured gain at room temperature is close to the theoretical design, which enables the lasers to overcome the relatively high waveguide loss

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 12 )