Suppression of intensity modulation contributions to signals in second harmonic wavelength modulation spectroscopy

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dc.contributor.author Chakraborty, Arup Lal
dc.date.accessioned 2014-03-15T08:17:42Z
dc.date.available 2014-03-15T08:17:42Z
dc.date.issued 2010-07
dc.identifier.citation Chakraborty, Arup Lal, “Suppression of intensity modulation contributions to signals in second harmonic wavelength modulation spectroscopy”, Optics Letters, DOI: 10.1364/OL.35.002400, vol. 35, no. 14, pp. 2400-2402, Jul. 2010. en_US
dc.identifier.issn 1539-4794
dc.identifier.uri http://dx.doi.org/10.1364/OL.35.002400
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/704
dc.description.abstract Recovery of the full 2f wavelength modulation spectroscopy (WMS) signal in isolation from the 2f residual amplitude modulation (RAM) due to nonlinear intensity modulation (IM) and distortion due to linear IM is demonstrated. The 2f RAM is eliminated using a fiber delay line, while the linear IM-induced distortion is eliminated by a phasor decomposition approach. This generic and robust two-pronged strategy removes the need to separately measure the 2f RAM in high-modulation-index calibration-free 2f WMS. It is also important for widely tunable 2f WMS using nontelecom diode lasers with highly nonlinear characteristics leading to high- 2f RAM levels. en_US
dc.description.statementofresponsibility by Arup Lal Chakraborty
dc.format.extent Vol. 35, No. 14, pp. 2400-2402
dc.language.iso en en_US
dc.publisher Optical Society of America en_US
dc.subject Decomposition approach en_US
dc.subject Intensity modulations en_US
dc.subject Modulation en_US
dc.subject Molecular spectroscopy en_US
dc.subject Radar absorbing materials en_US
dc.subject Residual amplitude modulation en_US
dc.subject Wavelength modulation spectroscopy en_US
dc.title Suppression of intensity modulation contributions to signals in second harmonic wavelength modulation spectroscopy en_US
dc.type Article en_US
dc.relation.journal Optics Letters


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