VCSEL end-pumped passively Q-switched Nd:YAG laser with adjustable pulse energy | Zendy

Lew Goldberg | Zendy; Chris McIntosh | Zendy; Brian J. Cole | Zendy

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VCSEL end-pumped passively Q-switched Nd:YAG laser with adjustable pulse energy

Author(s) -

Lew Goldberg,

Chris McIntosh,

Brian J. Cole

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.004261

Subject(s) - vertical cavity surface emitting laser , materials science , optics , laser , saturable absorption , q switching , optoelectronics , injection seeder , laser pumping , pulse width modulation , fiber laser , power (physics) , physics , quantum mechanics

A compact, passively Q-switched Nd:YAG laser utilizing a Cr4+:YAG saturable absorber, is end-pumped by the focused emission from an 804 nm vertical-cavity surface-emitting laser (VCSEL) array. By changing the VCSEL operating current, we demonstrated 2x adjustability in the laser output pulse energy, from 9 mJ to 18 mJ. This energy variation was attributed to changes in the angular distribution of VCSEL emission with drive current, resulting in a change in the pump intensity distribution generated by a pump-light-focusing lens.

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