Zen, D I M and Saidin, N and Damanhuri, S S A and Harun, S W and Ahmad, H and Ismail, M A and Dimyati, K and Halder, A and Paul, Mukul Chandra and Das, Shyamal and Pal, Mrinmay and Bhadra, Shyamal Kumar (2013) Mode-locked thulium-bismuth codoped fiber laser using graphene saturable absorber in ring cavity. Applied Optics, 52 (6). pp. 1226-1229. ISSN 0003-6935

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Abstract

We demonstrate mode locking of a thulium-bismuth codoped fiber laser (TBFL) operating at 1901.6 nm, using a graphene-based saturable absorber (SA). In this work, a single layer graphene is mechanically exfoliated using the scotch tape method and directly transferred onto the surface of a fiber pigtail to fabricate the SA. The obtained Raman spectrum characteristic indicates that the graphene on the core surface has a single layer. At 1552 nm pump power of 869 mW, the mode-locked TBFL self starts to generate an optical pulse train with a repetition rate of 16.7 MHz and pulse width of 0.37 ps. This is a simple, low-cost, stable, and convenient laser oscillator for applications where eye-safe and low-photon-energy light sources are required, such as sensing and biomedical diagnostics. (C) 2013 Optical Society of America

Item Type:	Article
Subjects:	Processing Science
Divisions:	Fiber Optics and Photonics
Depositing User:	Bidhan Chaudhuri
Date Deposited:	27 Sep 2013 09:28
Last Modified:	08 Feb 2017 10:21
URI:	http://cgcri.csircentral.net/id/eprint/2188

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