Investigations on photo-mechanical and photo-thermo-mechanical strain variations in amorphous selenium using fiber Bragg grating sensor

Gayathri, S and Sridevi, S and Asokan, S (2017) Investigations on photo-mechanical and photo-thermo-mechanical strain variations in amorphous selenium using fiber Bragg grating sensor. In: JOURNAL OF NON-CRYSTALLINE SOLIDS, 477 . pp. 7-11.

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Abstract

Light-induced structural changes are investigated on 90 nm thick amorphous-selenium (a-Se) thin film, coated on the cladding layer of an optical fiber Bragg Grating (FBG) sensor, upon illumination with 532 nm laser of 10 mW/mm(2) power under different exposure times (ms, s, min, h). The changes induced are measured using the photo-induced strain produced. In the present experiments, the contributions of photo-mechanical and photo-thermo-mechanical effects have been well separated. Also, the photo-thermally induced crystallization effects on the magnitude of the photo-induced strain have also been investigated.

Item Type:	Journal Article
Publication:	JOURNAL OF NON-CRYSTALLINE SOLIDS
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	17 Nov 2017 06:29
Last Modified:	17 Nov 2017 06:29
URI:	http://eprints.iisc.ac.in/id/eprint/58245

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