Beam quality measurement of a static-cell cesium DPAL with a stable resonator | Zendy

M.D. Rotondaro | Zendy; B. V. Zhdanov | Zendy; M. K. Shaffer | Zendy; R. J. Knize | Zendy

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Beam quality measurement of a static-cell cesium DPAL with a stable resonator

Author(s) -

M.D. Rotondaro,

B. V. Zhdanov,

M. K. Shaffer,

R. J. Knize

Publication year - 2018

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.26.005497

Subject(s) - resonator , optics , materials science , diode , caesium , beam (structure) , laser beam quality , laser , torr , optoelectronics , laser beams , chemistry , physics , organic chemistry , thermodynamics

We performed a measurement of the beam quality of an optimized moderate power cesium Diode Pumped Alkali Laser (DPAL). The DPAL used a stable resonator and operated in continuous wave mode using a static cell filled with metallic cesium and a mixture of methane and helium at 200 and 400 torr respectively. In this work, we characterized the spatial quality of the DPAL output beam. As a result of these experiments we determined the output beam quality was excellent (M 2 < 1.2) in the whole range of pump power used (up to 11.5W) and pump intensities reaching 1.5 kW/cm 2 . The optical conversion efficiency of this laser was 51% and the slope efficiency was 61%.

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