Chang, W C and Lin, Y S and Lee, Y W and Chen, C H and Lin, J H and Reddy, P H and Das, Shyamal and Dhar, A and Paul, Mukul Chandra (2017) Investigation of Q-Switched and Mode-Locked Pulses From a Yb3+-Doped Germano-Zirconia Silica Glass Based Fiber Laser. IEEE Photonics Journal, 9 (4). pp. 1-8. ISSN 1943-0647

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The Q-switched and mode-locked (QML) pulses of an all normal dispersion Yb3+-doped fiber laser (YDFL) using the nonlinear polarization rotation technique with symmetric and asymmetric Q-switched envelopes were investigated. For QML pulses with a symmetric shape, the width of envelope decreases as the pump power increases, achieving a shortest duration of ~1.4 μs. An alternate QML state of the YDFL exhibited an asymmetric envelope with a broad spectrum bandwidth, and whose short duration mode-locked pulses could be used as a light source for the cascaded Raman scattering generation through the injection of these high intensity QML pulses into an amplifier, using Yb3+-doped germano-zirconia silica (YD-GZS) glass based fiber as the gain fiber. In addition, the generation of a relatively broad spectrum near the IR range and the observation of some emission bands in the visible and UV range have been demonstrated at high pump power.

Item Type: Article
Uncontrolled Keywords: Q-switching;germanium compounds;laser beams;laser mode locking;optical fibre amplifiers;optical fibre dispersion;optical fibre polarisation;optical glass;optical pulse generation;optical pumping;silicon compounds;stimulated Raman scattering;ytterbium;yttrium compounds;zirconium compounds;GeO2-ZrO2-SiO2:Yb;Q-switched pulses;QML pulses;amplifier;asymmetric Q-switched envelopes;broad spectrum bandwidth;cascaded Raman scattering generation;gain fiber;germano-zirconia silica glass based fiber laser;high intensity QML pulses;nonlinear polarization rotation technique;normal dispersion YDFL;pump power;relatively broad spectrum;short duration mode-locked pulses;symmetric Q-switched envelopes;Cavity resonators;Fiber lasers;Optical fiber amplifiers;Optical fiber couplers;Optical fiber dispersion;Optical fiber polarization;Q-switched and mode-locked;Supercontinuum generation;Yb3+-doped fiber laser
Subjects: Processing Science
Divisions: Fiber Optics and Photonics
Depositing User: Bidhan Chaudhuri
Date Deposited: 16 Apr 2018 12:41
Last Modified: 17 Apr 2018 07:30

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