Please use this identifier to cite or link to this item: https://ktisis.cut.ac.cy/handle/10488/18544
Title: All-fiber passively mode-locked ultrafast laser based on a femtosecond-laser-inscribed in-fiber Brewster device
Authors: Huang, Zinan 
Huang, Qianqian 
Theodosiou, Antreas 
Cheng, Xi 
Zou, Chuanhang 
Dai, Lilong 
Kalli, Kyriacos 
Mou, Chengbo 
Major Field of Science: Engineering and Technology
Field Category: Materials Engineering
Keywords: Femtosecond lasers;Fiber lasers;Passive mode locking;Polarization
Issue Date: 1-Nov-2019
Source: Optics Letters, 2019, vol. 44, no. 21, pp. 5177-5180
Volume: 44
Issue: 21
Start page: 5177
End page: 5180
Journal: Optics Letters 
Abstract: We report on an in-fiber Brewster device with a 45° tilted fiber grating (TFG) directly written by a plane-by-plane femtosecond laser inscription method. Up to 10 dB polarization-dependent loss was achieved, proving effective polarizing functionality. Furthermore, we employ it as an in-line polarizer to successfully mode lock a fiber laser through the nonlinear polarization rotation technique. A stable soliton pulse train has been generated at 1563.64 nm with a pulse width of 624 fs and pulse energy of 0.42 nJ. With proper polarization adjustment, the laser also can operate in a noise-like regime. The parameters of this kind of 45°-TFG can be flexibly customized owing to the high flexibility and controllability of the femtosecond laser-inscription approach. In particular, such in-fiber polarizing devices inscribed by femtosecond laser inscription without removing the fiber coating are extremely robust for fiber lasers working at a broad wavelength region including the mid-infrared.
URI: https://ktisis.cut.ac.cy/handle/10488/18544
ISSN: 1539-4794
DOI: 10.1364/OL.44.005177
Rights: © Optical Society of America.
Type: Article
Affiliation : Shanghai University 
Cyprus University of Technology 
Appears in Collections:Άρθρα/Articles

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