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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >A novel single frequency stabilized Fabry-Perot laser diode at 1590 nm for gas sensing
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A novel single frequency stabilized Fabry-Perot laser diode at 1590 nm for gas sensing

机译：新型1590 nm单频稳定Fabry-Perot激光二极管，用于气体传感

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A novel single frequency stabilized Fabry-Perot (SFP) laser diode with an emission wavelength of lambda = 1590 nm for H2S gas sensing is reported. Sculpting of the multi-mode spectral distribution of a FP laser to achieve single frequency emission is carried out using post growth photolitographic processing of the device. The resulting longitudinal-mode controlled FP laser has a stabilized single frequency emission with a side mode suppression ratio (SMSR) of 40 dB. The application of this device to spectroscopic based H2S sensing is demonstrated by targeting absorption lines in the wavelength range 1588 < lambda < 1591 nm. Using wavelength modulation spectroscopy (WMS), a low detection limit of 120 ppm.m.Hz(-1/2) was estimated while targeting the absorption line at 1590.08 nm. These initial results demonstrate the potential of the stabilized FP laser diode at this wavelength as a tunable, single frequency source for spectroscopic based gas sensing. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 11]
机译：报道了一种用于H2S气敏的新型单频稳定Fabry-Perot（SFP）激光二极管，其发射波长为1590 nm。 FP激光器的多模光谱分布的雕刻以实现单频发射是通过使用设备的后期生长光刻技术进行的。所得的纵向模式控制FP激光器具有稳定的单频发射，其侧模抑制比（SMSR）为40 dB。通过将吸收线对准1588 <λ<1591 nm波长范围内的吸收线，证明了该设备在基于光谱的H2S传感中的应用。使用波长调制光谱（WMS），估计了120 ppm.m.Hz（-1/2）的低检测限，同时将吸收线对准了1590.08 nm。这些初步结果证明了稳定的FP激光二极管在此波长下作为基于光谱的气体传感的可调单频源的潜力。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：11]

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