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20 December 2022 Hybrid dual-comb emission spectroscopy based on soliton microcomb
Chi Zhang
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Proceedings Volume 12314, Optoelectronic Devices and Integration XI; 1231405 (2022) https://doi.org/10.1117/12.2647940
Event: SPIE/COS Photonics Asia, 2022, Online Only
Abstract
Dual-comb spectroscopy enables spectral measurement with large bandwidth spanning tens of nanometers, but it is limited to measuring absorption spectra and has to trade-off spectral resolution versus acquisition frame rate set by the repetition rate. Here, to alleviate these restrictions, we innovatively propose and demonstrate a hybrid dual-comb emission spectroscopy featuring a spectral resolution of 0.63 pm, a frame rate of 1 MHz, and a measurement bandwidth of 13.6 nm, simultaneously. A mode-locked fiber comb is harnessed to interrogate emission spectral features with high resolution via optical Fourier transform and a soliton microcomb serving as a probe pulse implement parallel multi-point sampling to significantly increase the acquisition rate by nearly 3 orders of magnitude from 1 kHz to 1 MHz. We believe that chip-scale microcombs will make the fast and high-resolution emission spectroscopy presented here a powerful tool for widespread applications.
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Chi Zhang "Hybrid dual-comb emission spectroscopy based on soliton microcomb", Proc. SPIE 12314, Optoelectronic Devices and Integration XI, 1231405 (20 December 2022); https://doi.org/10.1117/12.2647940
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KEYWORDS
Solitons
Emission spectroscopy
Spectral resolution
Frequency combs
Spectroscopy
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