Second-harmonic-generation enhancement in cavity resonator integrated grating filters.
Opt Lett
; 44(21): 5198-5201, 2019 Nov 01.
Article
en En
| MEDLINE
| ID: mdl-31674967
We demonstrate numerically and experimentally second-harmonic generation (SHG) in a cavity resonator integrated grating filter (CRIGF, a planar cavity resonator made of Bragg grating reflectors) around 1550 nm. SHG is modeled numerically for several different systems, including a thin plane layer of LiNbO3 without and with a grating coupler to excite a waveguide mode. We demonstrate that when the waveguide mode is confined to a CRIGF, designed to work with focused incident beams, the SHG power is increased more than 30 times, compared to the case of a single grating coupler used with an almost collimated pump beam.
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MEDLINE
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Opt Lett
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2019
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Article
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Estados Unidos