High-efficient Nd:YAG microchip laser for optical surface scanning

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00316314" target="_blank" >RIV/68407700:21340/17:00316314 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1117/12.2292777" target="_blank" >http://dx.doi.org/10.1117/12.2292777</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2292777" target="_blank" >10.1117/12.2292777</a>

Result language

angličtina

Original language name

High-efficient Nd:YAG microchip laser for optical surface scanning

Original language description

A CW operating, compact, high-power, high-efficient diode pumped 1064nm laser, based on Nd:YAG active medium, was developed for optical surface scanning and mapping applications. To enhance the output beam quality, laser stability, and compactness, a microchip configuration was used. In this arrangement the resonator mirrors were deposited directly on to the laser crystal faces. The Nd-doping concentration was 1 at.% Nd/Y. The Nd:YAG crystal was 5mm long. The laser resonator without pumping radiation recuperation was investigated - the output coupler was transparent for pumping radiation. For the generated laser radiation the output coupler reflectivity was 95%@1064 nm. The diameter of the samples was 5 mm. For the laser pumping two arrangements were investigated. Firstly, a fibre coupled laser diode operating at wavelength 808nm was used in CW mode. The 400 µm fiber was delivering up to 14W of pump power amplitude to the microchip laser. The maximum CW output power of 7.2W @ 1064nm in close to TEM00 beam mode was obtained for incident pumping power 13.7W @ 808 nm. The differential efficiency in respect to the incident pump power reached 56 %. Secondly, a single-emitter, 1W laser diode operating at 808nm was used for Nd:YAG microchip pumping. The laser pumping was directly coupled into the microchip laser using free-space lens optics. Slope efficiency up to 70% was obtained in stable, high-quality, 1064nm laser beam with CW power up to 350mW. The system was successfully used for scanning of super-Gaussian laser mirrors reflectivity profile.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/FV10124" target="_blank" >FV10124: New laser rods and discs for modern diode pumped lasers</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Photonics, Devices, and Systems VII

ISBN

978-1-5106-1702-5

ISSN

0277-786X

e-ISSN

—

Number of pages

7

Pages from-to

—

Publisher name

SPIE

Place of publication

Bellingham

Event location

Prague

Event date

Aug 28, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000425429900007