Q-Switch All-Fiber Laser Pulsed by High Order Modes

Author

Saez-Rodriguez, D. ; Cruz, Jose L. ; Diez, A. ; Barmenkov, Y.O. ; Andres, Miguel V.

Author_Institution

Photonics Res. Group, Aston Univ., Birmingham, UK

Volume

25

Issue

11

fYear

2013

fDate

1-Jun-13

Firstpage

1058

Lastpage

1061

Abstract

In this letter, we demonstrate an all-fiber Q-switch laser in erbium-doped fiber using an intracavity loss modulator that controls the power transmitted by a cladding mode. The cladding mode is coupled by a pair of concatenated long period gratings; pulsed regime is achieved by dynamic attenuation of the power transmitted by the cladding mode, and attenuation is caused by lateral compression with a piezoelectric transducer. The pulse sequence can be controlled from a single shot up to repetition rates of 2 kHz. The laser performance is analyzed as a function of the pump power and emission frequency; pulses having a peak power of 4 W and a duration of ~80 ns can be generated with an absorbed pump of 100 mW.

Keywords

Bragg gratings; Q-switching; erbium; fibre lasers; laser cavity resonators; laser modes; optical fibre cladding; optical fibre losses; optical pulse compression; optical pulse generation; optical pumping; piezoelectric transducers; Q-switch all-fiber laser; absorbed pump; cladding mode; concatenated long period gratings; dynamic attenuation; emission frequency; erbium-doped fiber; frequency 2 kHz; high order modes; intracavity loss modulator; laser performance; lateral compression; piezoelectric transducer; power 100 mW; power 4 W; power transmission; pulse generation; pulse sequence; pulsed regime; pump power; repetition rates; Fiber laser; Q-Switch; long period fiber grating; piezoelectric transducer;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2257727

Filename

6507558