| Holographic fabricated continuous wave operation of distributed feedback quantum cascade lasers atλ≈8.5μm |
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| 作者姓名： | 张锦川 王利军 张伟 刘万峰 刘俊岐 刘峰奇 李路 王占国 |
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| 作者单位： | Key Laboratory of Semiconductor Materials Science;Institute of Semiconductors;Chinese Academy of Sciences;Department of Electronic Engineering;Tsinghua University; |
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| 基金项目： | Project supported by the National Research Projects of China(Nos60525406,60736031,60806018,60906026,2006CB604903, 2007AA03Z446,2009AA03Z403) |
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| 摘 要： | The fabrication and characterization of distributed feedback（DFB） quantum cascade lasers emitting atλ≈8.5μm 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.
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| 关 键 词： | quantum cascade laser distributed feedback holographic continuous wave |
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