This is from an article entitled: Telluride temperature test, just right by David Bradley on Oct 15, 2009 on the SpectroscopyNOW website
Researchers in India have used laser spectroscopy and other techniques to study a novel doped telluride glass of technological interest. The material could have potential as new kind of high temperature sensor.
Rare earth metals have been used to dope glasses for use in solid state lasers and other optical devices since the early 1990s. Their ions have favourable energy levels and transitions that extend from the near-infrared (NIR) to the visible region of the electromagnetic spectrum. The earliest devices exploited down-conversion emissions but more recently researchers have been focusing on developing devices that utilise up-conversion instead. Such devices hold promise for displays, optical and thermal sensors, and on-line amplifiers.
Read the rest of the article by visiting here: www.spectroscopynow.com/coi/cda/detail.cda?id=22379&type=Feature&chId=1&page=1
The authors of the original work, are?? R.K. Verma, K. Kumar, and S.B. Rai of the Laser Spectroscopy Laboratory, Department of Physics, Faculty of Science, Banaras Hindu University, Varanasi India.
About the Department of Physics at Banaras Hindu University ,Varanasi India
About 1925 Research Activities Begin with Initial Research Programs in Cosmic Rays and Molecular Spectroscopy Followed by Atmospheric Physics and X-ray Crystallography Over the years many other research programs have been added in tune with the times with phasing out of older programs.
One of the Leading Centers of Research & Teaching for nearly 8 decades with equal emphasis on both the Generation of knowledge and Transfer of knowledge. The Department continues to address itself to the Frontier Areas of Research with concurrent upgradation of Teaching Programs as well.
Dr. S. B. Rai
Department of Physics
Banaras Hindu University
Varanasi – 221 005, India
+91-542-2307308, 2368390 (Office)
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Email: sbrai49 [at] yahoo.co.in
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