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Title: Dual-Frequency Operation in a Short-Cavity Ytterbium-Doped Fiber Laser

Abstract

A dual-frequency 2-cm silica fiber laser with a wavelength spacing of 0.3 nm has been demonstrated using a polarization-maintaining (PM) fiber-Bragg-grating (FBG) reflector. The birefringence of the PM FBG was used to generate the two single-mode (SM) lasing frequencies of orthogonal polarizations. The SM operation in each wavelength has been verified.

Authors:
;
Publication Date:
Research Org.:
Laboratory for Laser Energetics, University of Rochester
Sponsoring Org.:
USDOE
OSTI Identifier:
899499
Report Number(s):
DOE/SF/19460-729
Journal ID: ISSN 1041-1135; IPTLEL; 1690; 2006-64; TRN: US200722%%26
DOE Contract Number:
FC52-92SF19460
Resource Type:
Journal Article
Resource Relation:
Journal Name: IEEE Photonics Technology Letters; Journal Volume: 19; Journal Issue: 5
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; BIREFRINGENCE; FIBERS; LASERS; YTTERBIUM; DOPED MATERIALS; FREQUENCY DEPENDENCE; BRAGG REFLECTION; GRATINGS; SILICA; WAVELENGTHS; PERFORMANCE; optical fiber lasers; laser modes

Citation Formats

Guan, W., and Maricante, J.R.. Dual-Frequency Operation in a Short-Cavity Ytterbium-Doped Fiber Laser. United States: N. p., 2007. Web. doi:10.1109/LPT.2007.891200.
Guan, W., & Maricante, J.R.. Dual-Frequency Operation in a Short-Cavity Ytterbium-Doped Fiber Laser. United States. doi:10.1109/LPT.2007.891200.
Guan, W., and Maricante, J.R.. Thu . "Dual-Frequency Operation in a Short-Cavity Ytterbium-Doped Fiber Laser". United States. doi:10.1109/LPT.2007.891200.
@article{osti_899499,
title = {Dual-Frequency Operation in a Short-Cavity Ytterbium-Doped Fiber Laser},
author = {Guan, W. and Maricante, J.R.},
abstractNote = {A dual-frequency 2-cm silica fiber laser with a wavelength spacing of 0.3 nm has been demonstrated using a polarization-maintaining (PM) fiber-Bragg-grating (FBG) reflector. The birefringence of the PM FBG was used to generate the two single-mode (SM) lasing frequencies of orthogonal polarizations. The SM operation in each wavelength has been verified.},
doi = {10.1109/LPT.2007.891200},
journal = {IEEE Photonics Technology Letters},
number = 5,
volume = 19,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}
  • Using a short linear cavity composed of a section of highly ytterbium-doped fiber surrounded by two fiber Bragg gratings, dual frequency switching is achieved by tuning the pump power of the laser. The dual-frequency switching is generated by the thermal effects of the absorbed pump in the ytterbium-doped fiber. At each frequency, the laser shows single-longitudinal-mode behavior. In each single-mode regime, the optical signal-to-noise ratio of the laser is greater than 50 dB. The dual-frequency, switchable, fiber laser can be designed for various applications by the careful selection of the two gratings.
  • We have constructed an Yb-doped fiber laser in all-normal-dispersion configuration which can be independently operated in Q-switched or modelocked configuration with the help of a simple fiber optic ring resonator (FORR). In the presence of FORR, the laser operates in Q-switched mode producing stable pulses in the range of 1 μs-200 ns with repetition rate in the range of 45 kHz-82 kHz. On the other hand, the laser can be easily switched to mode-locked operation by disjoining the FORR loop producing train of ultrashort pulses of ∼5 ps duration (compressible to ∼150 fs) at ∼38 MHz repetition rate. The transmissionmore » characteristics of FORR in combination with the nonlinear polarization rotation for passive Q-switching operation is numerically investigated and experimentally verified. The laser can serve as a versatile seed source for power amplifier which can be easily configured for application in the fields that require different pulsed fiber lasers.« less
  • The recently introduced harmonic injection locking is a method for generating pulse trains at high repetition rates from passively mode-locked lasers. We report the simultaneous injection locking of two spectral bands in an erbium-doped fiber laser by injection of two spectrally distinct and temporally synchronized pulse trains. The injection-locked laser simultaneously produced pulses at wavelengths of 1.53 and 1.55{mu}m, each at a 7.5-GHz repetition rate and with a pulse width of 10ps. We compared the experimental results with those of a previous model [G. Agrawal, {ital Nonlinear} {ital Fiber} {ital Optics} (Academic, San Diego, Calif., 1989)], using a recently introducedmore » method for passively mode-locked laser simulation. {copyright} {ital 1996 Optical Society of America.}« less
  • Ytterbium-doped Sr{sub 5}( PO{sub 4}){sub 3}F was successfully lased at 985 nm in quasi-cw mode with a slope efficiency of 74% and an absorbed threshold energy of 18 mJ. Q -switched slope efficiencies of 21% were obtained with a maximum energy of 9.4 mJ in 8.8-ns pulses. (c)
  • 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.