LED-side-pumped Nd: YAG laser with >20% optical efficiency and the demonstration of an efficient passively Q-switched LED-pumped solid-state laser

Chun Yu Cho; Chi Chih Pu; Kuan-Wei Su; Yung-Fu Chen

doi:10.1364/OL.42.002394

LED-side-pumped Nd: YAG laser with >20% optical efficiency and the demonstration of an efficient passively Q-switched LED-pumped solid-state laser

Chun Yu Cho, Chi Chih Pu, Kuan-Wei Su, Yung-Fu Chen^*

^*Corresponding author for this work

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

14 Scopus citations

Abstract

A LED-array-pumped Nd: YAG laser with optical conversion efficiency up to 20.2% is demonstrated by direct side-pumping without a coupling lens. The 810-nm LED array with a full-width-half-maximum of 30 nm and an area fill factor of 50% is designed to attain high spectral absorption efficiency with a pump density of 151.8 W/cm². Furthermore, higher than 45% overall coupling efficiency is achieved by placing the LED array as close as possible to the side of the gain medium for overcoming the large pumped divergence. More importantly, by using the efficient pump scheme, the demonstration of a passively Q-switched LED-pumped laser is successfully realized with a pulsed energy of 1.42 mJ.

Original language	English
Pages (from-to)	2394-2397
Number of pages	4
Journal	Optics Letters
Volume	42
Issue number	12
DOIs	https://doi.org/10.1364/OL.42.002394
State	Published - 15 Jun 2017

Keywords

YAG LASER
ND
TEMPERATURE
CRYSTAL
FIBER

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title = "LED-side-pumped Nd: YAG laser with >20% optical efficiency and the demonstration of an efficient passively Q-switched LED-pumped solid-state laser",

abstract = "A LED-array-pumped Nd: YAG laser with optical conversion efficiency up to 20.2% is demonstrated by direct side-pumping without a coupling lens. The 810-nm LED array with a full-width-half-maximum of 30 nm and an area fill factor of 50% is designed to attain high spectral absorption efficiency with a pump density of 151.8 W/cm2. Furthermore, higher than 45% overall coupling efficiency is achieved by placing the LED array as close as possible to the side of the gain medium for overcoming the large pumped divergence. More importantly, by using the efficient pump scheme, the demonstration of a passively Q-switched LED-pumped laser is successfully realized with a pulsed energy of 1.42 mJ.",

keywords = "YAG LASER, ND, TEMPERATURE, CRYSTAL, FIBER",

author = "Cho, {Chun Yu} and Pu, {Chi Chih} and Kuan-Wei Su and Yung-Fu Chen",

year = "2017",

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doi = "10.1364/OL.42.002394",

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volume = "42",

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journal = "Optics Letters",

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TY - JOUR

T1 - LED-side-pumped Nd

T2 - YAG laser with >20% optical efficiency and the demonstration of an efficient passively Q-switched LED-pumped solid-state laser

AU - Cho, Chun Yu

AU - Pu, Chi Chih

AU - Su, Kuan-Wei

AU - Chen, Yung-Fu

PY - 2017/6/15

Y1 - 2017/6/15

N2 - A LED-array-pumped Nd: YAG laser with optical conversion efficiency up to 20.2% is demonstrated by direct side-pumping without a coupling lens. The 810-nm LED array with a full-width-half-maximum of 30 nm and an area fill factor of 50% is designed to attain high spectral absorption efficiency with a pump density of 151.8 W/cm2. Furthermore, higher than 45% overall coupling efficiency is achieved by placing the LED array as close as possible to the side of the gain medium for overcoming the large pumped divergence. More importantly, by using the efficient pump scheme, the demonstration of a passively Q-switched LED-pumped laser is successfully realized with a pulsed energy of 1.42 mJ.

AB - A LED-array-pumped Nd: YAG laser with optical conversion efficiency up to 20.2% is demonstrated by direct side-pumping without a coupling lens. The 810-nm LED array with a full-width-half-maximum of 30 nm and an area fill factor of 50% is designed to attain high spectral absorption efficiency with a pump density of 151.8 W/cm2. Furthermore, higher than 45% overall coupling efficiency is achieved by placing the LED array as close as possible to the side of the gain medium for overcoming the large pumped divergence. More importantly, by using the efficient pump scheme, the demonstration of a passively Q-switched LED-pumped laser is successfully realized with a pulsed energy of 1.42 mJ.

KW - YAG LASER

KW - ND

KW - TEMPERATURE

KW - CRYSTAL

KW - FIBER

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M3 - Article

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AN - SCOPUS:85020935119

SN - 0146-9592

VL - 42

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JO - Optics Letters

JF - Optics Letters

IS - 12

ER -

LED-side-pumped Nd: YAG laser with >20% optical efficiency and the demonstration of an efficient passively Q-switched LED-pumped solid-state laser

Abstract

Keywords

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