Observation of wave-breaking-free square pulses in a fiber ring laser

Tonghui Liu; Dongfang Jia; Ying Liu; Zhaoying Wang; Tianxin Yang

doi:10.3788/COL201513.101401

Journals >Chinese Optics Letters >Volume 13 >Issue 10 >Page 101401 > Article

Chinese Optics Letters
Vol. 13, Issue 10, 101401 (2015)

Observation of wave-breaking-free square pulses in a fiber ring laser

Tonghui Liu¹, Dongfang Jia^1,*, Ying Liu^1,2, Zhaoying Wang¹, and Tianxin Yang¹

Author Affiliations

¹Key Laboratory of Opto-electronic Information and Technical Science, College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China

²Department of Applied Physics, Tianjin University, Tianjin 300072, China

show less

DOI: 10.3788/COL201513.101401 Cite this Article Set citation alerts

Tonghui Liu, Dongfang Jia, Ying Liu, Zhaoying Wang, Tianxin Yang, "Observation of wave-breaking-free square pulses in a fiber ring laser," Chin. Opt. Lett. 13, 101401 (2015) Copy Citation Text

EndNote(RIS)

BibTex

Plain Text

show less

Abstract

We experimentally and numerically demonstrate the generation of square pulses without any wave-breaking in a fiber ring laser. A segment of nonzero dispersion-shifted fiber is used to increase the laser cavity length and to optimize the parameters of the laser cavity. In the experiment, the pulse width can be tuned in a wide range from 13.5 to 119.5 ns without wave-breaking while the peak power remains almost constant. The maximum single-pulse energy is up to 65.58 nJ at a pump power of 508 mW. Numerical results are in good agreement with the experimental results. Numerical results also reveal the role of cavity length and nonlinearity in generating a square pulse without pulse breakup.

\frac{\partial u}{\partial z} = - i β u + δ \frac{\partial u}{\partial t} - i \frac{β_{2}}{2} \frac{\partial^{2} u}{\partial t^{2}} + i γ ({| u |}^{2} + \frac{2}{3} {| v |}^{2}) u + \frac{i γ v^{2} u^{*}}{3} + \frac{g - α}{2} u + \frac{g}{2 Ω_{g}} \frac{\partial^{2} u}{\partial t^{2}},

(1a)

View in Article

\frac{\partial v}{\partial z} = - i β v - δ \frac{\partial v}{\partial t} - i \frac{β_{2}}{2} \frac{\partial^{2} v}{\partial t^{2}} + i γ ({| v |}^{2} + \frac{2}{3} {| u |}^{2}) v + \frac{i γ u^{2} v^{*}}{3} + \frac{g - α}{2} v + \frac{g}{2 Ω_{g}} \frac{\partial^{2} v}{\partial t^{2}},

(1b)

View in Article

T = \sin^{2} (θ) \sin^{2} (φ) + \cos^{2} (θ) \cos^{2} (φ) + 0.5 \sin (2 θ) \sin (2 φ) \cos (ϕ_{1} + ϕ_{2}),

(2)

View in Article

Tonghui Liu, Dongfang Jia, Ying Liu, Zhaoying Wang, Tianxin Yang, "Observation of wave-breaking-free square pulses in a fiber ring laser," Chin. Opt. Lett. 13, 101401 (2015)

Download Citation

EndNote(RIS)

BibTex

Plain Text

Set citation alerts for the article

Tools

Set citation alerts for the article

Save the article for my favorites

Paper Information

View in Article

View in Article

View in Article

微信扫一扫：分享

微信扫一扫：分享