NDLI: Optical AR Coatings of the Mid-IR Band for $ZnGeP_{2}$ Single Crystals Based on ZnS and Oxide Aluminum

Please wait, while we are loading the content...

Optical AR Coatings of the Mid-IR Band for $ZnGeP_{2}$ Single Crystals Based on ZnS and Oxide Aluminum

Content Provider	MDPI
Author	Zinoviev, Mikhail Yudin, Nikolai Nikolayevich Podzvalov, Sergey Slyunko, Elena Yudin, Nikolai Aleksandrovich Kulesh, Maksim Dorofeev, Igor Baalbaki, Houssain
Copyright Year	2022
Description	In this work, the parameters of antireflection interference coatings based on alternating layers of $ZnS/Al_{2}O_{3}$ on the laser-induced damage threshold (LIDT) of ZGP crystals under the action of Ho:YAG laser radiation at a wavelength of 2.097 μm were determined. The coating deposition was carried out using the ion-beam sputtering method. The LIDT of the sample with a coating based on alternating layers ZnS and $Al_{2}O_{3}$ was equal to $WoE$ = 3.45 $J/cm^{2}$, and the LIDT of the uncoated sample was equal to $WoE$ = 2.23 $J/cm^{2}$. An increase in the optical breakdown threshold by ~55% was observed after the deposition of an AR coating based on ZnS and $Al_{2}O_{3}$ materials. An assumption was made about the absence of local fluctuations in the composition and mechanical stresses in the case of the coated sample, namely that this leads to good adhesion of the multilayer coating to the polished surface of the crystal, and as a result to an increase in the optical breakdown threshold as compared to the uncoated sample due to closure of the dangling chemical bonds and bulk defects emerging on the polished surface.
Starting Page	1169
e-ISSN	20734352
DOI	10.3390/cryst12081169
Journal	Crystals
Issue Number	8
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2022-08-19
Access Restriction	Open
Subject Keyword	Crystals Spectroscopy Single Crystal Zngep2 Laser-induced Damage Threshold Crystal Structure Optical Coatings
Content Type	Text
Resource Type	Article

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in