Dr. Arup Lal Chakraborty Profile

Dr. Arup Lal Chakraborty

Associate Professor at Indian Institute of Technology Gandhinagar

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Author

Publications (7)

SPIE Journal Paper | 22 February 2020 Open Access

Field deployment of a 4320-nm quantum cascade laser-based TDLS system to compare the background CO2 levels in Mt. Abu with foreground measurements in Gandhinagar, India

Anirban Roy, Rohan Chawhan, Arup Lal Chakraborty

OE, Vol. 59, Issue 02, 024110, (February 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.2.024110

KEYWORDS: Quantum cascade lasers, Carbon monoxide, Digital signal processing, Absorption, Signal detection, Gas lasers, Optical engineering, Signal processing, Laser systems engineering, Calibration

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Proceedings Article | 23 April 2017 Paper

Fiber Bragg grating interrogation using a wavelength modulated 1651-nm tunable distributed feedback laser and a fiber ring resonator for wearable biomedical sensors

Anirban Roy, Arup Lal Chakraborty, Chandan Kumar Jha

Proceedings Volume 10323, 103234H (2017) https://doi.org/10.1117/12.2265617

KEYWORDS: Sensors, Fiber Bragg gratings, Modulation, Fiber lasers, Tunable lasers, Resonators, Biomedical optics, Semiconductor lasers, Laser resonators, Spectral resolution

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Proceedings Article | 5 May 2016 Paper

High-sensitivity remote detection of atmospheric pollutants and greenhouse gases at low ppm levels using near-infrared tunable diode lasers

Anirban Roy, Abhishek Upadhyay, Arup Lal Chakraborty

Proceedings Volume 9876, 98761W (2016) https://doi.org/10.1117/12.2222785

KEYWORDS: Spectroscopy, Calibration, Gases, Tunable diode lasers, Remote sensing, Atmospheric sensing, Modulation, Laser spectroscopy, Vertical cavity surface emitting lasers, Carbon dioxide, Methane, Semiconductor lasers, Carbon dioxide lasers

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Proceedings Article | 7 November 2012 Paper

Tunable diode laser spectroscopy with electronically controlled background RAM nulling

Abhishek Upadhyay, Vibhav Vikas Katre, Arup Lal Chakraborty

Proceedings Volume 8421, 84216H (2012) https://doi.org/10.1117/12.975190

KEYWORDS: Signal detection, Modulation, Absorption, Signal attenuation, Nulling interferometry, Spectroscopy, Semiconductor lasers, Tunable diode lasers, Laser spectroscopy, Optical switching

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Proceedings Article | 24 August 2011 Paper

Quantitative wavelength modulation spectroscopy for gas measurements: elimination of laser intensity modulation effects

Arup Lal Chakraborty, Walter Johnstone

Proceedings Volume 8173, 81731X (2011) https://doi.org/10.1117/12.897883

KEYWORDS: Modulation, Absorption, Calibration, Signal detection, Spectroscopy, Semiconductor lasers, Methane, Fiber optics, Tunable diode lasers, Laser spectroscopy

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Proceedings Article | 5 October 2009 Paper

Recent advance in tunable diode laser spectroscopy with background RAM nulling for industrial applications

Keith Ruxton, Arup Lal Chakraborty, Andrew McGettrick, Kevin Duffin, Walter Johnstone, George Stewart

Proceedings Volume 7503, 750313 (2009) https://doi.org/10.1117/12.833000

KEYWORDS: Absorption, Modulation, Spectroscopy, Nulling interferometry, Lenses, Tunable diode lasers, Laser spectroscopy, Near infrared, Resonators, Phase shift keying

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SPIE Journal Paper | 1 November 2004

Bidirectional frequency-domain digital filtering to simultaneously improve temperature resolution and eliminate spatial inaccuracy of a distributed temperature sensor

Arup Chakraborty, Sanjay Kher, Smita Chaubey, T. Nathan

OE, Vol. 43, Issue 11, (November 2004) https://doi.org/10.1117/12.10.1117/1.1797871

KEYWORDS: Digital filtering, Nonlinear filtering, Signal to noise ratio, Temperature sensors, Spatial resolution, Electronic filtering, Analog electronics, Linear filtering, Quantization, Data acquisition

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Showing 5 of 7 publications

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