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

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

Not Accessible

Your library or personal account may give you access

Abstract

Time-resolved photoluminescence (PL) on excitation with an ArF excimer laser and IR–vacuum UV optical absorption induced by irradiation of an ArF excimer laser of commercially available CaF2 single crystals fabricated by four different manufacturers were measured. Intrinsic PL that was due to self-trapped excitons generated by band-to-band excitation by two-photon absorption processes was observed in all samples. In addition, most samples showed PL originating from traces of lanthanoid (Ln) impurities, Ce3+, Eu2+ (blue emission), or Tb3+ (yellow-green emission). The PL of Ce3+ and Eu2+ had no correlation with color-center formation; however, intense absorption bands arising from an F- center associated with a trivalent yttrium ion (YFC) were necessarily induced in the samples that showed yellow-green PL of Tb3+ under irradiation by ArF excimer laser light. When the yellow-green fluorescent samples were irradiated with ArF excimer laser light, the PL intensity of Tb3+ and the induced absorption that was due to YFC increased with the irradiated pulse number, and their growth was found to conform to a first-order kinetics. It was concluded that photoelectrons were released from Tb2+ ions by ArF excimer laser irradiation, and the resulting electrons were trapped at the site of a fluorine vacancy neighboring on Y3+. Therefore the intensity of yellow-green PL of Tb3+ is proposed as an index for diagnosis of resistance to ArF excimer laser damage in CaF2 single crystals.

© 1999 Optical Society of America

Full Article  |  PDF Article
More Like This
Influence of sodium impurities on ArF excimer-laser-induced absorption in CaF2 crystals

Norio Komine, Shigeru Sakuma, Masaki Shiozawa, Tsutomu Mizugaki, and Eiji Sato
Appl. Opt. 39(22) 3925-3930 (2000)

Laser spectral dynamics of Nd3+ in CaF2–YF3 crystals

I. Iparraguirre, J. Azkargorta, J. Fernández, R. Balda, A. Oleaga, and A. A. Kaminskii
J. Opt. Soc. Am. B 16(9) 1439-1446 (1999)

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

Tables (3)

You do not have subscription access to this journal. Article tables 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 (5)

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