Title :
Single-tuning dual-pulse Er3+-doped Q-switched all-fiber laser
Author :
Yunjun, Zhang ; Wenbin, He
Author_Institution :
Nat. Key Lab. of Tunable Laser Technol., Harbin Inst. of Technol., Harbin, China
Abstract :
An all-fiber actively Q-switched Er3+-doped laser is presented based on magnetostriction modulation of a fiber Bragg gratings (FBGs). The laser employs a pair of FBGs as reflective mirrors, one of which is bonded to a magnetostrictive rod. The Q-factor of the cavity is controlled by tuning the Bragg wavelength of the grating when a magnetic field is applied to the magnetostrictive rod. During a single-tuning period, the dual pulses are acquired from the Q-switched laser due to the FBGs´ reflective peaks twice coincident. Using a maximum pump power of 120 mW, Q-switch pulses of 1.2W and 0.6 W peak powers is obtained, with a laser pulse repetition rate of 4.4 kHz and 8.8 kHz.
Keywords :
Bragg gratings; Q-factor; Q-switching; erbium; fibre lasers; laser mirrors; laser tuning; magnetostriction; optical fibres; optical pulse generation; optical pumping; FBG; Q-factor; Q-switching; all-fiber laser; fiber Bragg gratings; frequency 4.4 kHz; frequency 8.8 kHz; laser pulse repetition rate; magnetostriction modulation; magnetostrictive rod; power 0.6 W; power 1.2 W; power 120 mW; reflective mirrors; single-tuning; Fiber gratings; Fiber lasers; Laser excitation; Laser tuning; Magnetostriction; Pump lasers; Fiber laser; Q-switched; all-fiber; fiber Bragg gratings;
Conference_Titel :
Optoelectronics and Microelectronics Technology (AISOMT), 2011 Academic International Symposium on
Conference_Location :
Harbin
Print_ISBN :
978-1-4577-0794-0
DOI :
10.1109/AISMOT.2011.6159313
