Principles and performance of tapered fiber lasers: from uniform to flared geometry

We have studied the recently demonstrated concept of fiber lasers based on active tapered double-clad fiber (T-DCF) in copropagating and counterpropagating configurations, both theoretically and experimentally, and compared the performance to fiber lasers based on conventional cylindrical fibers in...

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Bibliographic Details
Published in:Applied optics (2004) 2012-10, Vol.51 (29), p.7025-7038
Main Authors: Kerttula, Juho, Filippov, Valery, Chamorovskii, Yuri, Ustimchik, Vasily, Golant, Konstantin, Okhotnikov, Oleg G
Format: Article
Language:English
Subjects:
Adiabatic flow
Bending
Coiling
Devices
Fiber lasers
Fibers
Joining
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Summary:We have studied the recently demonstrated concept of fiber lasers based on active tapered double-clad fiber (T-DCF) in copropagating and counterpropagating configurations, both theoretically and experimentally, and compared the performance to fiber lasers based on conventional cylindrical fibers in end-pumped configurations. Specific properties of T-DCFs were considered theoretically using a rate-equation model developed for tapered fibers, and a detailed comparative study was carried out experimentally. Furthermore, we have studied mode coupling effects in long adiabatic tapers due to coiling and local bending. The results allow us to conclude that, with proper fiber design, the T-DCF technology offers a high-potential alternative for bright, cost-effective fiber devices.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.51.007025