Papers & References

Improved phase-locking of laser arrays by pump shaping

PLUTO / PLUTO-2 Spatial Light Modulators
Adaptive Optics / Wavefront Control Beam Shaping / Beam Steering
Published on:
Authors: Sagie Gadasi, Eran Bernstein, Amit Pando, Asher Friesem, and Nir Davidson
Abstract:

We introduce a method to enhance the phase-locking quality and duration of an end-pumped laser array by precisely shaping its pump beam to overlap with the array. Shaping the pump beam results in a significant improvement in lasing efficiency and reduces the pump power required to reach the lasing threshold compared to a typical uniform pumping configuration. Our approach involves shaping a highly incoherent laser beam by addressing smaller segments of the beam with higher local spatial coherence. We demonstrate a remarkable increase in the laser array output brightness by up to a factor of 10, accompanied by a substantial extension in the phase-locking duration.

Open Access

Publication: Optics Express
Issue/Year: Opt. Express 31, 24615-24622 (2023)
DOI: 10.1364/OE.494943
Link: https://doi.org/10.1364/OE.494943
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