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Please use this identifier to cite or link to this item: http://dyuthi.cusat.ac.in/purl/1764

Title: A fibre optic evanescent wave sensor for monitoring the rate of pulsed laser deposition of metal thin films
Authors: Nampoori, V P N
Radhakrishnan, P
Girijavallabhan, C P
Shelly John, M
Keywords: pulsed laser deposition
fibre optic sensor
evanescent wave
silver thin films
Issue Date: 12-Nov-1998
Publisher: Measurement Science and Technology, UK
Citation: International School of Photonics, Cochin University of Science and Technology
Abstract: A novel sensing technique for the in situ monitoring of the rate of pulsed laser deposition (PLD) of metal thin films has been developed. This optical fibre based sensor works on the principle of the evanescent wave penetration of waveguide modes into the uncladded portion of a multimode fibre. The utility of this optical fibre sensor is demonstrated in the case of PLD of silver thin films obtained by a Q-switched Nd:YAG laser which is used to irradiate a silver target at the required conditions for the preparation of thin films. This paper describes the performance and characteristics of the sensor and shows how the device can be used as an effective tool for the monitoring of the deposition rate of silver thin films. The fibre optic sensor is very simple, inexpensive and highly sensitive compared with existing techniques for thin film deposition rate measurements.
URI: http://dyuthi.cusat.ac.in/purl/1764
Appears in Collections:Dr. V P N Nampoori

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