Investigation of Q-Switched and Mode-Locked Pulses From a Yb3+-Doped Germano-Zirconia Silica Glass Based Fiber Laser

The Q-switched and mode-locked (QML) pulses of an all normal dispersion Yb 3+ -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...

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Bibliographic Details
Published in:IEEE photonics journal 2017-08, Vol.9 (4), p.1-8
Main Authors: Wei-Cheng Chang, Yu-Sheng Lin, Yin-Wen Lee, Chien-Hsing Chen, Ja-Hon Lin, Reddy, Pinninty Harshavardhan, Das, Shyamal, Dhar, Anirban, Paul, Mukul Chandra
Format: Article
Language:English
Subjects:
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
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Summary:The Q-switched and mode-locked (QML) pulses of an all normal dispersion Yb 3+ -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 Yb 3+ -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.
ISSN:1943-0655
1943-0655
1943-0647
DOI:10.1109/JPHOT.2017.2718020