Show/Hide Menu
Hide/Show Apps
anonymousUser
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Videos
Videos
Thesis submission
Thesis submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Contact us
Contact us
Upconversion fluorescence assisted visualization of femtosecond laser filaments in Er-doped chalcohalide 65GeS(2)-25Ga(2)S(3)-10CsCl glass
Date
2019-11-01
Author
Blonskyi, Ivan
Kadan, Viktor
Shpotyuk, Oleh
Calvez, Laurent
Pavlov, Ihor
Pavlova, Svitlana
Dmytruk, Andriy
Rybak, Andriy
Korenyuk, Petro
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
7
views
0
downloads
Cite This
Upconversion fluorescence of Er3+ ions (1 at. %) excited with femtosecond laser pulses of different repetition frequencies (seed laser 76 MHz, and laser amplifier 1 kHz) is studied in the Er-doped chalcohalide glass of 65GeS(2)-25Ga(2)S(3)-10CsCl composition. Strong weakening of fluorescence efficiency at 530 nm and 560 nm and photoinduced darkening are observed under 1 kHz excitation, which is most probably caused by free carriers generated by two-photon absorption. On the other hand, neither weakening nor photodarkening is observed under 76 MHz excitation, this being presumably due to concomitant thermal annealing. Taking an advantage of upconversion fluorescence, the femtosecond filamentation associated with positive changes in refractive index is recorded in the Er-doped 65GeS(2)-25Ga(2)S(3)-10CsCl glass, whereas exceeding the threshold of thermal melting is accompanied by an opposite decrease in the refractive index.
Subject Keywords
Electrical and Electronic Engineering
,
Atomic and Molecular Physics, and Optics
,
Electronic, Optical and Magnetic Materials
URI
https://hdl.handle.net/11511/48250
Journal
OPTICS AND LASER TECHNOLOGY
DOI
https://doi.org/10.1016/j.optlastec.2019.105621
Collections
Department of Physics, Article
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
I. Blonskyi et al., “Upconversion fluorescence assisted visualization of femtosecond laser filaments in Er-doped chalcohalide 65GeS(2)-25Ga(2)S(3)-10CsCl glass,”
OPTICS AND LASER TECHNOLOGY
, vol. 119, pp. 0–0, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48250.