A novel 2-μm pulsed fiber laser based on a supercontinuum source and its application to mid-infrared supercontinuum generation

doi:10.1088/1674-1056/23/5/054208

Abstract A new method to achieve 2-μm pulsed fiber lasers based on a supercontinuum (SC) is demonstrated. The incident pump light is a pulsed SC which contains a pump light and a signal light at the same time. The initial signal of the seed laser is provided by the incident pump light and amplified in the cavity. Based on this, we obtain a 2-μm pulsed laser with pulse repetition rate of 50 kHz and pulse width of 2 ns from the Tm-doped fiber laser. This 2-μm pulsed laser is amplified by two stages of fiber amplifiers, then the amplified laser is used for mid-infrared (mid-IR) SC generation in a 10-m length of ZrF₄-BaF₂-LaF₃-AlF₃-NaF (ZBLAN) fiber. An all-fiber-integrated mid-IR SC with spectrum ranging from 1.8 μm to 4.3 μm is achieved. The maximal average output power of the mid-IR SC from the ZBLAN fiber is 1.24 W (average output power beyond 2.5 μm is 340 mW), corresponding to an output efficiency of 6.6% with respect to the 790-nm pump power.

Keywords: fiber laser supercontinuum mid-infrared ZBLAN fiber

Received: 08 August 2013
Revised: 14 October 2013
Accepted manuscript online:

PACS:	42.55.Wd	(Fiber lasers)
	42.65.-k	(Nonlinear optics)
	42.65.Ky	(Frequency conversion; harmonic generation, including higher-order harmonic generation)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61235008 and 61077076).

Corresponding Authors: Hou Jing
E-mail: houjing25@sina.com

About author: 42.55.Wd; 42.65.-K; 42.65.Ky

Cite this article:

Yang Wei-Qiang (杨未强), Zhang Bin (张斌), Hou Jing (侯静), Yin Ke (殷科), Liu Ze-Jin (刘泽金) A novel 2-μm pulsed fiber laser based on a supercontinuum source and its application to mid-infrared supercontinuum generation 2014 Chin. Phys. B 23 054208

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A novel 2-μm pulsed fiber laser based on a supercontinuum source and its application to mid-infrared supercontinuum generation

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