Second harmonic generation at 544 nm of a femtosecond laser

We study second harmonic generation (SHG) at 544 nm of the 0-type (e + e - e) quasi-phase-matching based on a femtosecond laser at 1088 nm. The green pulse with the spectrum width of 0.6 nm and the peak power of 17.7 kW is obtained at the pump power density of 2.81 GW/cm2 and the conversion efficien...

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Bibliographic Details
Published inOptik (Stuttgart) Vol. 208; p. 164537
Main Authors Liu, Hong, Lin, Hong-Yi, Huang, Zhang-Chao, Ruan, Jian-Jian, Sun, Dong
Format Journal Article
LanguageEnglish
Published Elsevier GmbH 01.04.2020
Subjects
544 nm laser
Femtosecond pulses
Group velocity match
PPMgLN
Second harmonic generation
Ultrafast optics
Second harmonic generation
Femtosecond pulses
PPMgLN
Group velocity match
Ultrafast optics
544 nm laser
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Summary:We study second harmonic generation (SHG) at 544 nm of the 0-type (e + e - e) quasi-phase-matching based on a femtosecond laser at 1088 nm. The green pulse with the spectrum width of 0.6 nm and the peak power of 17.7 kW is obtained at the pump power density of 2.81 GW/cm2 and the conversion efficiency is 21 %. As the propagation distance along the PPMgLN crystal increases, the spectrum at 544 nm becomes narrower and narrower and the pulse duration broadens very seriously.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2020.164537