Journal
OPTICS LETTERS
Volume 46, Issue 4, Pages 797-800Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.415437
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- Ministry of Science and Technology, Taiwan [109-2119-M-009-015-MY3, 109-3111-9-009-001]
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The new output coupler significantly improves the output power and efficiency of the laser, with the double-sided coating effectively increasing the cavity reflectivity. This results in a conversion efficiency of 26.3% for the yellow laser and an output power of 7.0 W for the orange laser, representing a significant enhancement in performance.
A new, to the best of our knowledge, output coupler (OC) with enhancement of the cavity reflectivity is proposed to remarkably elevate the output powers and efficiencies of diode-pumped Nd:GdVO4/KGW Raman yellow-orange lasers. The cavity reflectivity is effectively increased by using the double-sided dichroic coating on the OC. In comparison with the conventional single-sided coating, the conversion efficiency can be boosted from 15% to 26.3% in the experiment of a yellow laser at 578.8 nm, and the maximum output power can be increased from 5.7 to 10.5 W in the quasi-continuous-wave mode with 50% duty cycle and frequency of 500 Hz. Furthermore, in the operation of an orange laser at 588 nm, the maximum output power can be improved from 5.6 to 7.0 W by replacing the conventional OC with the new one. (C) 2021 Optical Society of America
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