Optical Frequency Comb Calibrated Near Infrared Solar Heterodyne Spectroscopy
classification
🌌 astro-ph.IM
keywords
frequencycalibratedcombheterodynelaserspectroscopyabsoluteinfrared
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We perform heterodyne spectroscopy at 1.56 micron with a tunable laser and thermal radiation from the Sun. The laser tuning is calibrated with a frequency comb, providing a simple spectrometer with absolute frequency tracebility and resolving power of 2,000,000
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