Characteristics of Linearly Polarized Yb-Doped Fiber Laser in an All-Fiber Configuration

Author

Shirakawa, Akira ; Kamijo, Makoto ; Ota, Jun ; Ueda, Ken-ichi ; Mizuuchi, Kiminori ; Furuya, Hiroyuki ; Yamamoto, Kazuhisa

Author_Institution

Univ. of Electro-Commun., Tokyo

Volume

19

Issue

20

fYear

2007

Firstpage

1664

Lastpage

1666

Abstract

Polarization selection in fiber lasers by use of two birefringent fiber Bragg gratings is investigated. When the principal axes of the two gratings are arranged perpendicularly by incorporating one cross splicing and one of the combinations of slow and fast axis Bragg wavelengths is matched, a resonator can be formed only for a single-polarization state. An 8-W 1064-nm linearly polarized Yb-doped fiber laser with an 87% slope efficiency and less than 20-pm bandwidth has been successfully demonstrated. No additional loss in polarization selection is preferable for high efficiency and high-power durability.

Keywords

Bragg gratings; birefringence; fibre lasers; ytterbium; birefringent fiber Bragg gratings; cross splicing; fast axis Bragg wavelengths; fiber lasers; high-power durability; polarization; single-polarization state; slope efficiency; slow axis Bragg wavelengths; Bandwidth; Birefringence; Bragg gratings; Fiber gratings; Fiber lasers; Frequency conversion; Laser beams; Laser modes; Optical fiber polarization; Splicing; Birefringence; fiber Bragg grating (FBG); fiber laser; linear polarization; polarization-maintaining (PM) fiber;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.905060

Filename

4336159