High average powers diode pumped slab laser

Author

Comaskey, Brian J. ; Beach, Ray ; Albrecht, G. ; Benett, William J. ; Freitas, Barry L. ; Petty, C. ; VanLue, D. ; Mundinger, D. ; Solarz, Richard W.

Author_Institution

Lawrence Livermore Nat. Lab., CA, USA

Volume

28

Issue

4

fYear

1992

fDate

4/1/1992 12:00:00 AM

Firstpage

992

Lastpage

996

Abstract

The authors have developed and tested stackable microchannel cooled laser bar diode pump packages suitable for direct pumping of slab lasers at high duty factor. A stack of 41 diode packages gives a pump array of 13.5 cm² and produces a peak power of 4000 W and an average power of 1000 W for an average irradiance of 75 W/cm². A high average power, total internal reflection face pumped Nd:YAG laser using 80 diode packages has been constructed. Preliminary testing of the slab laser using a 20% subset of diode packages arranged to pump a 4 mm×4 mm×80 mm volume of the slab has been completed. Seventy watts average power is obtained at 2.5 kHz pulse repetition rates and 100 μs pulse widths

Keywords

neodymium; optical pumping; solid lasers; 1000 W; 4000 W; YAG:Nd; YAl5O12:Nd; average irradiance; average power; diode pumped slab laser; direct pumping; duty factor; peak power; pulse repetition rates; pulse widths; pump array; stackable microchannel cooled laser bar diode pump packages; total internal reflection face pumped Nd:YAG laser; Diodes; Laser excitation; Microchannel; Packaging; Power lasers; Pump lasers; Semiconductor laser arrays; Slabs; Space vector pulse width modulation; Testing;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.135218

Filename

135218