Laser induced damage in optical glasses using nanosecond pulses at 1030 nm

0542248 - FZÚ 2022 RIV US eng C - Conference Paper (international conference)
Muresan, Mihai-George - Čech, Pavel - Bílek, Vojtěch - Horodyská, Petra - Rostohar, Danijela - Lucianetti, Antonio - Mocek, Tomáš
Laser induced damage in optical glasses using nanosecond pulses at 1030 nm.
Laser-Induced Damage in Optical Materials. Bellingham: SPIE, 2018 - (Carr, C.; Exarhos, G.; Soileau, M.), č. článku 108052A. Proceedings of SPIE, 10805. ISBN 978-1-510-62194-7. ISSN 0277-786X.
[Annual Laser Damage Symposium /50./. Boulder (US), 23.09.2018-26.09.2018]
R&D Projects: GA MŠMT EF15_006/0000674; GA MŠMT LO1602; GA MŠMT LM2015086
EU Projects: European Commission(XE) 739573 - HiLASE CoE
Grant - others:OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674; GA AV ČR StrategieAV21/17
Program: StrategieAV
Institutional support: RVO:68378271 ; RVO:61389021
Keywords : glasses * refractive index * laser induced damage * surface finishing * surface roughness * confocal microscopy
OECD category: Optics (including laser optics and quantum optics); Optics (including laser optics and quantum optics) (UFP-V)
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10805/2500204/Laser-induced-damage-in-optical-glasses-using-nanosecond-pulses-at/10.1117/12.2500204.short?SSO=1

The “Bivoj”10J,10ns,10Hz,Yb:YAG(1030 nm) diode-pumped solid state laser at the HiLASE was used to investigate the laser-induced damage of optical glasses with different refractive index(BK7, SF8, FS, LIBA2000).Samples were polished using a combination of methods and cleaned in ultrasonic bath or with ion beams.Sample surface was characterized using white-light interferometry and laser confocal microscopy.For the LIDT,an S-on-1 procedure was selected,the testing taking place in accordance with the ISO21254 standard.Due to the high energy per pulse of the “Bivoj” system we were capable of using beams with more than 500μm diameter(using a long focusing mirror)and thus,including different surface defect in the LIDT measurement.The damage of the glasses was usually observed on the rear side(ballistic damage)due to constructive interference,however we manage to see on few samples front damage also.Values above 50J/cm2 were common for all tested samples.

Permanent Link: http://hdl.handle.net/11104/0319713