In:
Chinese Physics B, IOP Publishing, Vol. 31, No. 10 ( 2022-09-01), p. 104204-
Abstract:
The calcium fluoride (CaF 2 ) whispering gallery mode crystalline resonator is an excellent platform for nonlinear optical applications because of the decreasing in threshold caused by ultrahigh quality ( Q ) factor. In this paper, we achieved the observation of Raman lasing, first-order Raman comb, and second-order Raman lasing in a CaF 2 disk resonator with a diameter of 4.96 mm and an ultrahigh- Q of 8.43×10 8 at 1550-nm wavelength. We also observed thermal effects in CaF 2 disk resonator, and the threshold of thermo-optical oscillation is approximately coincident with Raman lasing, since the intracavity power increases rapidly when the power reaches the threshold, and higher input pump power results in longer thermal drift and higher Raman emission power. With a further increase in pump power, the optical frequency combs range is from 1520 nm to 1650 nm, with a wavelength interval of 4×FSR. It is a promising candidate for optical communication, biological environment monitoring, spectral analysis, and microwave signal sources.
Type of Medium:
Online Resource
ISSN:
1674-1056
DOI:
10.1088/1674-1056/ac8728
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2022
detail.hit.zdb_id:
2412147-2
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