TY - GEN
T1 - Wavelength calibration of a tunable spatial heterodyne spectrometer
AU - Nirmal, K.
AU - Sridharan, R.
AU - Sriram, S.
AU - Ambily, Suresh
AU - Mathew, Joice
AU - Sarpotdar, Mayuresh
AU - Murthy, Jayant
AU - Gopalakrishnan, Binukumar
AU - Safonova, Margarita
N1 - Publisher Copyright:
© 2018 SPIE.
PY - 2018
Y1 - 2018
N2 - Spatial Heterodyne Spectroscopy (SHS) is a relatively novel interferometric technique similar to Fourier transform spectroscopy and shares design similarities with a Michelson Interferometer. An Imaging detector is used at the output of a SHS to record the spatially heterodyned interference pattern. The spectrum of the source is obtained by Fourier transforming the recorded interferogram. The merits of the SHS -its design, including the lack of moving parts, compactness, high throughput, high SNR and instantaneous spectral measurements - makes it suitable for space as well as ground observatories. The small bandwidth limitation of the SHS can be overcome by building it in tunable configuration (Tunable Spatial Heterodyne Spectrometer(TSHS)). In this paper, we describe the wavelength calibration of the tunable SHS using a Halogen lamp and Andor monochromator setup. We found a relation between the fringe frequency and the wavelength.
AB - Spatial Heterodyne Spectroscopy (SHS) is a relatively novel interferometric technique similar to Fourier transform spectroscopy and shares design similarities with a Michelson Interferometer. An Imaging detector is used at the output of a SHS to record the spatially heterodyned interference pattern. The spectrum of the source is obtained by Fourier transforming the recorded interferogram. The merits of the SHS -its design, including the lack of moving parts, compactness, high throughput, high SNR and instantaneous spectral measurements - makes it suitable for space as well as ground observatories. The small bandwidth limitation of the SHS can be overcome by building it in tunable configuration (Tunable Spatial Heterodyne Spectrometer(TSHS)). In this paper, we describe the wavelength calibration of the tunable SHS using a Halogen lamp and Andor monochromator setup. We found a relation between the fringe frequency and the wavelength.
UR - http://www.scopus.com/inward/record.url?scp=85052611876&partnerID=8YFLogxK
U2 - 10.1117/12.2312454
DO - 10.1117/12.2312454
M3 - Conference contribution
SN - 9781510619579
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Ground-based and Airborne Instrumentation for Astronomy VII
A2 - Simard, Luc
A2 - Simard, Luc
A2 - Evans, Christopher J.
A2 - Takami, Hideki
PB - SPIE
T2 - Ground-based and Airborne Instrumentation for Astronomy VII 2018
Y2 - 10 June 2018 through 14 June 2018
ER -