Increasing the efficiency of a fixed-wavelength cascaded Raman resonator for a non-resonant pump by using a reflector

Prakash, R and Balaswamy, V and Choudhury, V and Supradeepa, VR (2018) Increasing the efficiency of a fixed-wavelength cascaded Raman resonator for a non-resonant pump by using a reflector. In: 4th IEEE International Conference on Emerging Electronics, ICEE 2018, 17-19 December 2018, Bengaluru.

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Abstract

A narrow-band, fixed-wavelength cascaded Raman resonator can be effectively used only for a given input wavelength. The efficiency of wavelength conversion of a cascaded Raman resonator decreases sharply when a non-resonant pump is used. Designing and fabricating new grating sets for the resonator for different pump sources isn't a feasible option as it compromises the simplicity and cost-effectiveness of this approach. We identified that by seeding the cascaded Raman conversion suitably, a substantial improvement in efficiency can be achieved. This is demonstrated using a coupler-based broadband reflector to significantly improve the performance of CRR for a non-resonant pump source. Remarkable improvement in efficiency is obtained with ∼ 70 of the output power at 1480nm Stokes wavelength when the CRR is pumped by a 16W Ytterbium doped fiber laser at 1057nm. © 2018 IEEE.

Item Type:	Conference Paper
Publication:	2018 4th IEEE International Conference on Emerging Electronics, ICEE 2018
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to the Institute of Electrical and Electronics Engineers Inc.
Keywords:	Cost effectiveness; Distributed feedback lasers; Efficiency; Fiber Bragg gratings; Fiber lasers; Fibers; Reflection; Resonators; Stimulated Raman scattering, Broadband reflector; Distributed feedback; Fixed wavelength; Input wavelength; Raman conversion; Raman lasers; Stokes wavelength; Ytterbium-doped fiber lasers, Pumping (laser)
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	30 Jul 2022 05:06
Last Modified:	30 Jul 2022 05:06
URI:	https://eprints.iisc.ac.in/id/eprint/75086

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