Burst-mode thulium all-fiber laser delivering femtosecond pulses at a 1 GHz intra-burst repetition rate
Author
Elahı, P.
Kalaycıoğlu, H.
Akçaalan, Ö.
Şenel, Ç.
Ilday, F. Ö.
Date
2017Source Title
Optics Letters
Print ISSN
0146-9592
Publisher
Optical Society of America
Volume
42
Issue
19
Pages
3808 - 3811
Language
English
Type
ArticleItem Usage Stats
132
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Abstract
We report on the development of, to the best of our knowledge, the first ultrafast burst-mode laser system operating at a central wavelength of approximately 2 μm, where water absorption and, consequently, the absorption of most biological tissue is very high. The laser comprises a harmonically mode-locked 1-GHz oscillator, which, in turn, seeds a fiber amplifier chain. The amplifier produces 500 ns long bursts containing 500 pulses with 1 GHz intra-burst and 50 kHz inter-burst repetition rates, respectively, at an average power of 1 W, corresponding to 40 nJ pulse and 20 μJ burst energies, respectively. The entire system is built in an all-fiber architecture and implements dispersion management such that output pulses are delivered directly from a single-mode fiber with a duration of 340 fs without requiring any external compression. This gigahertz-repetition-rate system is intended for ablation-cooled laser material removal in the 2 μm wavelength region, which is interesting for laser surgery due to the exceptionally high tissue absorption at this wavelength.
Keywords
Electromagnetic pulseFiber amplifiers
Fiber lasers
Fibers
Laser surgery
Single mode fibers
Tissue
Water absorption
Biological tissues
Burst repetition rate
Central wavelength
Dispersion management
Fiber amplifier chains
Laser material removal
Tissue absorption
Wavelength regions
Pulse repetition rate
Permalink
http://hdl.handle.net/11693/37023Published Version (Please cite this version)
http://dx.doi.org/10.1364/OL.42.003808Collections
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