Chin. J. Semicond. > 2007, Volume 28 > Issue S1 > 489-491
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Room Temperature，Low Threshold Distributed Feedback Quantum Cascade Lasers

Xu Gangyi, Li Yaoyao, Li Aizhen, Wei Lin, Zhang Yonggang and Li Hua

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Abstract: We report on pulsed and continuous-wave operation of single mode tunable distributed feedback quantum cascade lasers at A≈7.7um.A deep top grating and a thin heavily doped InP layer beneath the grating are formed in the upper clad- ding to obtain simultaneously a strong feedback effect and a low waveguide loss.In pulsed operation，a very low threshold current density of 970A/cm2 and a peak power of 75mW are achieved at 300K. Reliable single mode emission with a side mode suppression ratio of～30dB is achieved in a large temperature range(155～320K)with a tuning range of 90nm.The lasets operate in continuous.wave mode up to 130K.

Key words: mid infrared, distributed feedback, quantum cascade lasers

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    Received: 27 May 2016 Revised: Online: Published: 01 January 2007

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      Article Navigation >  Journal of Semiconductors  > 2007  >  28(S1): 489-491
      Xu Gangyi, Li Yaoyao, Li Aizhen, Wei Lin, Zhang Yonggang, Li Hua. Room Temperature，Low Threshold Distributed Feedback Quantum Cascade Lasers[J]. Journal of Semiconductors, 2007, 28(S1): 489-491. ****Xu G Y, Li Y Y, Li A Z, Wei L, Zhang Y G, Li H. Room Temperature，Low Threshold Distributed Feedback Quantum Cascade Lasers[J]. Chin. J. Semicond., 2007, 28(S1): 489.
      Citation:
      Xu Gangyi, Li Yaoyao, Li Aizhen, Wei Lin, Zhang Yonggang, Li Hua. Room Temperature，Low Threshold Distributed Feedback Quantum Cascade Lasers[J]. Journal of Semiconductors, 2007, 28(S1): 489-491. ****
      Xu G Y, Li Y Y, Li A Z, Wei L, Zhang Y G, Li H. Room Temperature，Low Threshold Distributed Feedback Quantum Cascade Lasers[J]. Chin. J. Semicond., 2007, 28(S1): 489.
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      Room Temperature，Low Threshold Distributed Feedback Quantum Cascade Lasers

      • State Key Laboratory of Functional Materialsfor lnformatics，Shanghai Institute ofMicrosystem and Information Technology，Chinese Academy of Sciences，Shanghai 200050，China,State Key Laboratory of Functional Materialsfor lnformatics，Shanghai Institute ofMicrosystem and Information Technology，Chinese Academy of Sciences，Shanghai 200050，China,State Key Laboratory of Functional Materialsfor lnformatics，Shanghai Institute ofMicrosystem and Information Technology，Chinese Academy of Sciences，Shanghai 200050，China,State Key Laboratory of Functional Materialsfor lnformatics，Shanghai Institute ofMicrosystem and Information Technology，Chinese Academy of Sciences，Shanghai 200050，China,State Key Laboratory of Functional Materialsfor lnformatics，Shanghai Institute ofMicrosystem and Information Technology，Chinese Academy of Sciences，Shanghai 200050，China and State Key Laboratory of Functional Materialsfor lnformatics，Shanghai Institute ofMicrosystem and Information Technology，Chinese Academy of Sciences，Shanghai 200050，China

      • Received Date: 2016-05-27
      • Published Date: 2016-04-28

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