Demonstration of a kilowatt average power, 1 J, green laser | Zendy

Han Chi | Zendy; Yong Wang | Zendy; Aaron Davenport | Zendy; Carmen S. Mei | Zendy; J. J. Rocca | Zendy

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Demonstration of a kilowatt average power, 1 J, green laser

Author(s) -

Han Chi,

Yong Wang,

Aaron Davenport,

Carmen S. Mei,

J. J. Rocca

Publication year - 2020

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.412975

Subject(s) - optics , power (physics) , green laser , laser , physics , telecommunications , computer science , quantum mechanics

A λ =515 n m laser generating joule-level pulses at 1 kHz repetition rate was demonstrated by frequency doubling 1.2 J, 2 ns temporally shaped square pulses from a cryogenically cooled Yb:YAG laser in an LBO crystal. A doubling efficiency of 78% resulted in 0.94 J second-harmonic pulses at 1 kHz. The unconverted light interacted with a second LBO crystal to generate >100 m J second-harmonic pulses to reach a total green average power of 1.04 kW. A conversion efficiency of 89% was achieved for 0.58 J green pulses at 1 kHz. These results open the possibility to pump high energy femtosecond lasers at kilohertz repetition rates.

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