Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Time-resolved imaging of CaF2 poly-crystal response following 355 nm nanosecond laser irradiation

Not Accessible

Your library or personal account may give you access

Abstract

The evolution of 355 nm nanosecond laser-induced damage to ${{\rm CaF}_2}$ poly-crystals is investigated by using the time-resolved pump-probe shadowgraph technique. The damage morphologies of the front surface, rear surface, and interior of the ${{\rm CaF}_2}$ crystal are imaged by optical microscopy. When the rear surface is focused by one laser pulse throughout the front surface, three shock waves (SWs) and one SW are observed in the air beside the front and rear surfaces, respectively. When the laser energies are 40 mJ and 60 mJ, at delay time of 1000 ns the radii of SW fronts beside the front surface are 2569.8 µm and 2831.7 µm, while those beside the rear surface are 1012.9 µm and 1078.1 µm, respectively. The filamentary channels inside the ${{\rm CaF}_2}$ crystal are established before the end of a laser pulse at energies of 25, 40, or 60 mJ. The average propagation velocities of SWs along the filamentary channel are approximately 8.2 µm/ns. The maximum diameters of channels can reach approximately 53 µm and 128 µm for 25 mJ energy and 40 mJ energy, respectively. The experimental results help to explore the mechanism of laser-induced ${{\rm CaF}_2}$ poly-crystal damage in nanosecond regime.

© 2021 Optical Society of America

Full Article  |  PDF Article
More Like This
Filamentary damage of fused silica irradiated by a 532 nm nanosecond laser

Jingrui Cao, Yong Jiang, Rong Qiu, and Tao Lü
Opt. Mater. Express 11(3) 936-942 (2021)

Damage morphologies of Al2O3 and Fe particles attached on the input surface of fused silica after irradiation by a 355 nm laser

Yuhan Li, Caizhen Yao, Xinxiang Miao, Hairong Wang, and Xiaodong Jiang
Appl. Opt. 60(26) 8130-8136 (2021)

Time-resolved photoluminescence for diagnosis of resistance to ArF excimer laser damage to CaF2 single crystals

Masafumi Mizuguchi, Hideo Hosono, Hiroshi Kawazoe, and Tohru Ogawa
J. Opt. Soc. Am. B 16(7) 1153-1159 (1999)

Data Availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved