| Original Articles |
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Pulse Wavelength Scan of Room-Temperature Mid-Infrared Distributed Feedback Quantum Cascade Lasers for N2O Gas Detection |
| ZHANG Yong-Gang;XU Gang-Yi;LI Ai-Zhen;LI Yao-Yao;GU Yi;LIU Sheng;WEI Lin |
| State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050 |
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| Cite this article: |
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ZHANG Yong-Gang, XU Gang-Yi, LI Ai-Zhen et al 2006 Chin. Phys. Lett. 23 1780-1783 |
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Abstract The tunable diode laser absorption spectroscopy under a pulse wavelength scan scheme is adapted to home-made room-temperature mid-infrared distributed feedback quantum cascade lasers; and identification of N2O spectral fingerprint is demonstrated experimentally. By driving the laser at 800ns pulse duration, a wave number tuning of about 1.6cm-1 is produced, which make both 1289.04cm-1 and 1289.86cm-1 absorption fingerprints of N2O gas to be definitely assigned. The measured relative absorption intensity is consistent with the HITRAN data precisely.
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| Keywords:
42.55.Px
85.60.Bt
42.62.Fi
51.70.+f
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Published: 01 July 2006
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| PACS: |
42.55.Px
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(Semiconductor lasers; laser diodes)
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85.60.Bt
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(Optoelectronic device characterization, design, and modeling)
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42.62.Fi
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(Laser spectroscopy)
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51.70.+f
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(Optical and dielectric properties)
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