| Citation: |
Zhang Jinchuan, Wang Lijun, Zhang Wei, Liu Wanfeng, Liu Junqi, Liu Fengqi, Li Lu, Wang Zhanguo. Holographic fabricated continuous wave operation of distributed feedback quantum cascade lasers at λ ≈ 8.5 μm[J]. Journal of Semiconductors, 2011, 32(4): 044008. doi: 10.1088/1674-4926/32/4/044008
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Zhang J C, Wang L J, Zhang W, Liu W F, Liu J Q, Liu F Q, Li L, Wang Z G. Holographic fabricated continuous wave operation of distributed feedback quantum cascade lasers at λ ≈ 8.5 μm[J]. J. Semicond., 2011, 32(4): 044008. doi: 10.1088/1674-4926/32/4/044008.
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Holographic fabricated continuous wave operation of distributed feedback quantum cascade lasers at λ ≈ 8.5 μm
DOI: 10.1088/1674-4926/32/4/044008
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Abstract
The fabrication and characterization of distributed feedback (DFB) quantum cascade lasers emitting at λ ≈ 8.5 μm are reported. The first-order DFB grating structure was defined using the holographic lithography technique. Reliable dynamic single-mode emission with a side-mode suppression ratio of 20 dB and a tuning coefficient of –0.277 cm-1/K from 93 to 210 K is obtained in continuous wave mode by using high-reflectivity coating on the rear facet. The output power is over 100 mW at a temperature of 80 K.-
Keywords:
- quantum cascade laser
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