NDLI: Specific spectral features of green to UV and violet up-conversion in $Nd^{3+}-doped$ fluorozirconate glass

Content Provider	IEEE Xplore Digital Library
Author	Klimczak, M. Malinowski, M. Piramidowicz, R.
Copyright Year	2009
Description	Author affiliation: Institute of Microelectronics and Optoelectronics, Koszykowa 75, 00-662 Warsaw, Poland (Klimczak, M.; Malinowski, M.; Piramidowicz, R.)
Abstract	An increasing demand for new techniques of optical recording and processing of information motivates search for new, efficient sources of coherent radiation operating in the short-wavelength part of spectrum (both visible and ultraviolet). Apart from solutions based on wide energy gap semiconductors or frequency multiplication techniques, optical fiber solid state lasers based on low-phonon glasses doped with rare-earth ions continue to be considered as potential efficient short-wavelength sources utilizing optical properties of $Nd^{3+},$ $Ho^{3+},$ $Er^{3+}$ or $Tm^{3+}$ ions as active dopants [1]. Among these, the trivalent neodymium stands out with a rich energy level structure of the $4f^{n}$ configuration with at least three high-energy levels known to have emitted UV-violet radiation: $^{2}P,$ $^{4}D$ and $^{2}F(2)$ [1–3]. Particularly, neodymium's highest energy level in the 4f3 configuration, the $^{2}F(2)$ localized approximately 38600 $cm^{−1}$ over the ground state, has been known for UV emission in $Nd^{3+}-doped$ silica oxide glasses [2] and fluoride as well as oxide crystals [3]. Still, knowledge of its spectroscopic properties in fluoride glasses, the only solid state medium to enable room temperature UV fiber laser [1 and ref. therein], remains largely incomplete. Because of a relatively weak ground state absorption, this level fails to fluoresce under direct excitation in a fluorozirconate glass, whereas most up-conversion pumping schemes yield dominantly $^{2}P$ and $^{4}D$ activity.
Starting Page	1
Ending Page	1
File Size	168132
Page Count	1
File Format	PDF
ISBN	9781424440795
DOI	10.1109/CLEOE-EQEC.2009.5196534
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-14
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical fibers Spectroscopy Particle beam optics Stimulated emission Neodymium Stationary state Glass Solid lasers Energy states Optical pumping
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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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
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