THE NEAR-CONCENTRIC UNSTABLE RESONATOR (NCUR) - AN IMPROVED RESONATORDESIGN FOR HIGH-POWER SOLID-STATE LASERS

Authors
HODGSON N BOSTANJOGLO G WEBER H
Citation
N. Hodgson et al., THE NEAR-CONCENTRIC UNSTABLE RESONATOR (NCUR) - AN IMPROVED RESONATORDESIGN FOR HIGH-POWER SOLID-STATE LASERS, Optics communications, 99(1-2), 1993, pp. 75-81
Citations number
23
Categorie Soggetti
Optics
Journal title
Optics communications → ACNP
ISSN journal
00304018
Volume
99
Issue
1-2
Year of publication
1993
Pages
75 - 81
Database
ISI
SICI code
0030-4018(1993)99:1-2<75:TNUR(->2.0.ZU;2-4
Abstract
A novel concept of an unstable resonator, the near-concentric unstable resonator (NCUR), is introduced; its properties include a much lower sensitivity to thermal lensing as compared to other unstable resonator schemes. Experiments were performed with a pulsed Nd:YAG rod laser ca pable of 550 W of maximum output power with short flat-flat resonators . A maximum output power of 420 W and beam parameter products below 3 mm mrad were obtained with a symmetrical NCUR with a variable reflecti vity mirror.