High-power high-brightness 2-μm continuous wave laser with a double-end diffusion-bonded Tm, Ho:YVO4 crystal

Gang Li; Yuqiu Gu; Baoquan Yao; Lianqiang Shan; Yuezhu Wang

doi:10.3788/COL201311.091404

High-power high-brightness 2-μm continuous wave laser with a double-end diffusion-bonded Tm, Ho:YVO₄ crystal

Gang Li
, Yuqiu Gu
, Baoquan Yao^*
, Lianqiang Shan
, Yuezhu Wang

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology
China Academy of Engineering Physics

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

This letter demonstrates an efficient high-power high-brightness 2-μm continuous-wave (CW) laser with double-end, diffusion-bonded Tm, Ho:YVO₄ crystal cooled with liquid N₂. The reduction in thermal stress in the composite Tm, Ho:YVO₄ rod enabled the laser to achieve a laser output power of 23.4 W at 2.05 μm, which is 1.37 times higher than that of the non-composite Tm, Ho:YVO4 rod. The corresponding slope efficiency is 37.3% and the optical-optical conversion efficiency is 35.4%. The beam quality M² factor is about 1.85 at 20 W output level with circularly symmetric beam spot.

Original language	English
Article number	091404
Journal	Chinese Optics Letters
Volume	11
Issue number	9
DOIs	https://doi.org/10.3788/COL201311.091404
State	Published - Sep 2013

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title = "High-power high-brightness 2-μm continuous wave laser with a double-end diffusion-bonded Tm, Ho:YVO4 crystal",

abstract = "This letter demonstrates an efficient high-power high-brightness 2-μm continuous-wave (CW) laser with double-end, diffusion-bonded Tm, Ho:YVO4 crystal cooled with liquid N2. The reduction in thermal stress in the composite Tm, Ho:YVO4 rod enabled the laser to achieve a laser output power of 23.4 W at 2.05 μm, which is 1.37 times higher than that of the non-composite Tm, Ho:YVO4 rod. The corresponding slope efficiency is 37.3\% and the optical-optical conversion efficiency is 35.4\%. The beam quality M2 factor is about 1.85 at 20 W output level with circularly symmetric beam spot.",

author = "Gang Li and Yuqiu Gu and Baoquan Yao and Lianqiang Shan and Yuezhu Wang",

year = "2013",

month = sep,

doi = "10.3788/COL201311.091404",

language = "英语",

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journal = "Chinese Optics Letters",

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T1 - High-power high-brightness 2-μm continuous wave laser with a double-end diffusion-bonded Tm, Ho:YVO4 crystal

AU - Li, Gang

AU - Gu, Yuqiu

AU - Yao, Baoquan

AU - Shan, Lianqiang

AU - Wang, Yuezhu

PY - 2013/9

Y1 - 2013/9

N2 - This letter demonstrates an efficient high-power high-brightness 2-μm continuous-wave (CW) laser with double-end, diffusion-bonded Tm, Ho:YVO4 crystal cooled with liquid N2. The reduction in thermal stress in the composite Tm, Ho:YVO4 rod enabled the laser to achieve a laser output power of 23.4 W at 2.05 μm, which is 1.37 times higher than that of the non-composite Tm, Ho:YVO4 rod. The corresponding slope efficiency is 37.3% and the optical-optical conversion efficiency is 35.4%. The beam quality M2 factor is about 1.85 at 20 W output level with circularly symmetric beam spot.

AB - This letter demonstrates an efficient high-power high-brightness 2-μm continuous-wave (CW) laser with double-end, diffusion-bonded Tm, Ho:YVO4 crystal cooled with liquid N2. The reduction in thermal stress in the composite Tm, Ho:YVO4 rod enabled the laser to achieve a laser output power of 23.4 W at 2.05 μm, which is 1.37 times higher than that of the non-composite Tm, Ho:YVO4 rod. The corresponding slope efficiency is 37.3% and the optical-optical conversion efficiency is 35.4%. The beam quality M2 factor is about 1.85 at 20 W output level with circularly symmetric beam spot.

UR - https://www.scopus.com/pages/publications/84888594367

U2 - 10.3788/COL201311.091404

DO - 10.3788/COL201311.091404

M3 - 文章

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SN - 1671-7694

VL - 11

JO - Chinese Optics Letters

JF - Chinese Optics Letters

IS - 9

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ER -

High-power high-brightness 2-μm continuous wave laser with a double-end diffusion-bonded Tm, Ho:YVO₄ crystal

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