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Title: Single-Polarisation, Single-Frequency, 2 cm Ytterbium-Doped Fibre Laser

Abstract

A single-polarisation, single-frequency, ytterbium-doped silica fibre laser has been demonstrated in a 2 cm linear cavity. The output power reaches 35 mW with an optical signal-to-noise ratio greater than 65 dB. A polarisation-maintaining fibre Bragg grating is used as the polarisation-dependent reflector to generate the single-polarisation output with the polarisation extinction ratio greater than 20 dB. The laser works stably for two hours under laboratory conditions.

Authors:
;
Publication Date:
Research Org.:
Laboratory for Laser Energetics, University of Rochester
Sponsoring Org.:
USDOE
OSTI Identifier:
907779
Report Number(s):
DOE/SF/19460-751
Journal ID: ISSN 0013-5194; ELLEAK; 2006-200; 1712; TRN: US200721%%314
DOE Contract Number:
FC52-92SF19460
Resource Type:
Journal Article
Resource Relation:
Journal Name: Electronics Letters; Journal Volume: 43; Journal Issue: 10
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; FIBERS; LASERS; POLARIZATION; SIGNAL-TO-NOISE RATIO; SILICA; YTTERBIUM; DOPED MATERIALS; PERFORMANCE; BRAGG REFLECTION; DIFFRACTION GRATINGS

Citation Formats

Guan, W., and Marciante, J.R.. Single-Polarisation, Single-Frequency, 2 cm Ytterbium-Doped Fibre Laser. United States: N. p., 2007. Web. doi:10.1049/el:20070162.
Guan, W., & Marciante, J.R.. Single-Polarisation, Single-Frequency, 2 cm Ytterbium-Doped Fibre Laser. United States. doi:10.1049/el:20070162.
Guan, W., and Marciante, J.R.. Wed . "Single-Polarisation, Single-Frequency, 2 cm Ytterbium-Doped Fibre Laser". United States. doi:10.1049/el:20070162.
@article{osti_907779,
title = {Single-Polarisation, Single-Frequency, 2 cm Ytterbium-Doped Fibre Laser},
author = {Guan, W. and Marciante, J.R.},
abstractNote = {A single-polarisation, single-frequency, ytterbium-doped silica fibre laser has been demonstrated in a 2 cm linear cavity. The output power reaches 35 mW with an optical signal-to-noise ratio greater than 65 dB. A polarisation-maintaining fibre Bragg grating is used as the polarisation-dependent reflector to generate the single-polarisation output with the polarisation extinction ratio greater than 20 dB. The laser works stably for two hours under laboratory conditions.},
doi = {10.1049/el:20070162},
journal = {Electronics Letters},
number = 10,
volume = 43,
place = {United States},
year = {Wed May 23 00:00:00 EDT 2007},
month = {Wed May 23 00:00:00 EDT 2007}
}
  • The regime of polarisation switching in a double-clad ytterbium fibre laser is studied experimentally and explained theoretically. It is shown that polarisation switching appears in lasers with the long active medium (no less than 20 m) when the pump slightly exceeds the threshold. The experimentally observed properties of spontaneous polarisation switching in the ytterbium fibre laser are explained by the competition of modes with orthogonal polarisations taking into account the polarisation-dependent saturation of amplification and losses. (fibre lasers)
  • This paper presents an experimental study of frequency doubling of a tunable ytterbium-doped fibre laser in KTP crystals phase-matched in the XY and YZ planes. In the XY plane, we obtained continuous tuning in the range 528 - 540 nm through intracavity frequency doubling. The second-harmonic power reached 450 mW for 18 W of multimode diode pump power, which was five times higher in comparison with single-pass frequency doubling. In a single-pass configuration in the YZ plane, we obtained a wide tuning range (527 - 551 nm) in the green spectral region and a second-harmonic power of {approx}10 mW. Themore » tuning range was only limited by the mechanical performance of the fibre Bragg grating and can potentially be extended to the entire lasing range of the ytterbium-doped fibre laser.« less
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  • Ytterbium-ion-doped double-clad optical fibres were developed. The differential quantum efficiency of a diode-pumped fibre laser, fabricated on the basis of such optical fibres with a fibre Bragg grating, was 90%. (lasers)
  • The use of optical fibres with a high concentration of active ions in the fibre core allows the reduction of the active fibre length and the increase in the threshold powers of various nonlinear effects in the fibre, thereby increasing the maximum output power of fibre lasers. For this purpose, we manufactured a highly concentrated ytterbium-doped ({approx}1.0x10{sup 21}cm{sup -3}) phosphate glass for the active fibre core and a pure glass of a similar composition for the fibre cladding. A single-mode fibre is fabricated from these glasses and generation is obtained in an ytterbium laser based on this fibre with themore » slope efficiency of no less than 60% at a wavelength of 975 nm. (letters)« less