Open AccessHigh‐speed quantum cascade laser at room temperature
Author(s) -
Zhou Yu Hong,
Zhai Shen Qiang,
Liu Junqi,
Liu Fengqi,
Zhang Jinchuan,
Zhuo Ning,
Wang Lijun,
Wang Zhanguo
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2016.0062
Subject(s) - cascade , laser , quantum cascade laser , rectification , optoelectronics , microwave , materials science , optics , continuous wave , semiconductor laser theory , power (physics) , mode (computer interface) , physics , engineering , computer science , quantum mechanics , chemical engineering , operating system
Room‐temperature, high‐speed quantum cascade lasers at 4.7 μm are presented. An output power of 115 mW and threshold current of 230 mA are obtained for the lasers working in continuous‐wave mode. Reliable single‐mode emission with a side‐mode suppression ratio more than 30 dB is observed. Using microwave rectification technology, a flat frequency response up to roughly 3 GHz for the laser operating at 10°C is demonstrated.