Evidence of Brillouin scattering in an ytterbium-doped double-clad fiber laser

Salhi, Mohammed; Hideur, Ammar; Chartier, Thierry; Brunel, Marc; Martel, Gilles; Özkul, Cafer; Sanchez, François

doi:10.1364/ol.27.001294

Cited by 77 publications

(53 citation statements)

References 9 publications

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“…3, inset) comprises a main pulse and much lower-power satellite pulses before and after the main pulse. Similarly short pulses were observed previously in Q-switched Er-doped fiber lasers, and various explanations for this behavior, such as the conjunction of Q-switched operation with self-mode locking owing to self-phase modulation 15,16 and the effect of stimulated Brillouin scattering, 17,18 have been proposed. Further research to determine the origin of the short-pulse generation for our passively Q-switched f iber laser is in progress.…”

supporting

confidence: 74%

Compact diode-pumped passively Q-switched tunable Er–Yb double-clad fiber laser

et al. 2002

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Efficient repetitive passive Q switching of a cladding-pumped Er -Yb fiber laser has been demonstrated by use of an external-cavity configuration containing a Co 21 : ZnS crystal as a saturable absorber. Energies of as much as 60 mJ in pulses of durations as short as 3.5 ns (FWHM), corresponding to a peak power of .10 kW, have been generated, and the maximum slope efficiency with respect to the absorbed pump power was 13%. Using a bulk diffraction grating in the Littrow configuration to provide wavelength-selective feedback, we tuned the passively Q-switched fiber laser over 31 nm from 1532 to 1563 nm. The prospects for further improvement in performance are discussed. © 2002 Optical Society of America OCIS codes: 060.2320, 140.3480, 140.3540, 140.3510, 140.3600. Over the past decade, progress in the development of efficient diode-pumped, pulsed solid-state lasers operating in the eye-safe wavelength regime near 1.5 mm has been dramatic, fueled by the needs of a variety of scientific, industrial, and defense applications. For some of these applications (e.g., range finding and remote sensing) the requirement for short pulses (a few nanoseconds) has led to the development of compact Er-Yb-doped glass microlasers with active or passive Q switching. By virtue of their very short cavity lengths (typically a few millimeters), these lasers can generate pulses of ,8-ns duration and .3-mJ energy. 1An alternative method for producing pulsed output in the 1.5-mm spectral range is to Q switch an Er -Yb-codoped fiber laser. This approach has the potential attraction that output powers should be scalable to much higher levels without degradation in beam quality by the use of a double-clad fiber design and cladding -pumping. To simplify the resonator design and eliminate the need for external Q-switching electronics, passive Q switching of single-clad Er-doped fiber lasers has also been attempted with a liquefying gallium mirror, 9 a semiconductor saturable absorber, 10 and a Co 21 :ZnSe crystal as the saturable absorber.11

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confidence: 74%

Compact diode-pumped passively Q-switched tunable Er–Yb double-clad fiber laser

et al. 2002

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“…This phenomenon is generally considered to arise from the stimulated Brillouin scatter- Figure 5 (online color at www.lphys.org) Schematic sketch of the OPO setup. A half-wave plate and polarization beam splitter cube were settled in front of OPO to control the input pump power ing (SBS) which can provide strong feedback to the cavity together with pulse compression [35][36][37][38]. The SBSrelated pulses have been demonstrated in different fiber laser designs, such as self-Q switched [35][36][37], actively Qswitched [38,39], and passively Q-switched [40,41] fiber lasers.…”

Section: Diode Pumped Pcf Laser With Algainas Semiconductor Absorbermentioning

confidence: 99%

“…A half-wave plate and polarization beam splitter cube were settled in front of OPO to control the input pump power ing (SBS) which can provide strong feedback to the cavity together with pulse compression [35][36][37][38]. The SBSrelated pulses have been demonstrated in different fiber laser designs, such as self-Q switched [35][36][37], actively Qswitched [38,39], and passively Q-switched [40,41] fiber lasers. Although the strong SBS effect might deteriorate the pulse stability to some extent, the pulse-to-pulse amplitude fluctuation could still be maintained to be less than 8.0% in rms at the maximum pump power of 13.1 W. The output repetition rate ranges from 1.5 to 6.5 kHz and is related to pump power.…”

Section: Diode Pumped Pcf Laser With Algainas Semiconductor Absorbermentioning

confidence: 99%

Widely tunable eye-safe laser by a passively Q-switched photonic crystal fiber laser and an external-cavity optical parametric oscillator

et al. 2011

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We report on a widely tunable passively Q‐switched photonic crystal fiber (PCF) laser with wavelength tuning range up to 80 nm. The PCF laser utilizes an AlGaInAs quantum well/barrier structure as a saturable absorber and incorporates an external‐cavity optical parametric oscillator (OPO) to achieve wavelength conversion. Under a pump power of 13.1 W at 976 nm, the PCF laser generated 1029‐nm radiation with maximum output energy of 750 μJ and was incident into an external‐cavity OPO. The output energy and peak power of signal wave was found to be 138 μJ and 19 kW, respectively. By tuning the temperature of nonlinear crystal, periodically poled lithium niobate (PPLN), in the OPO, the signal wavelength in eye‐safe regime from 1513 to 1593 nm was obtained. (© 2011 by Astro Ltd., Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA) (© 2011 by Astro Ltd., Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA)

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“…However, nonlinear phenomena such as stimulated Brillouin scattering (SBS) and the thermal or temperature effects limit the laser output power and lead to some unexpected instabilities of laser signal in the double-clad fiber laser. The SBS has been experimentally and directly observed in specific cavity involving intracore Bragg grating of Yb-doped double-clad fiber laser, and the emer gence of SBS leads to the pulse width reduction and temporal instability [3]. The SBS are theoretically investigated in high power dual-clad fiber lasers [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Stimulated Brillouin scattering in Yb3+-doped dual-clad fiber lasers based on the temperature-dependent model

Ning

et al. 2015

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Evidence of Brillouin scattering in an ytterbium-doped double-clad fiber laser

Cited by 77 publications

References 9 publications

Compact diode-pumped passively Q-switched tunable Er–Yb double-clad fiber laser

Compact diode-pumped passively Q-switched tunable Er–Yb double-clad fiber laser

Widely tunable eye-safe laser by a passively Q-switched photonic crystal fiber laser and an external-cavity optical parametric oscillator

Stimulated Brillouin scattering in Yb3+-doped dual-clad fiber lasers based on the temperature-dependent model

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