Title :
Gain switching of waveguide laser based on Nd-doped silica planar lightwave circuit pumped by laser diodes
Author :
Hattori, Kuninori ; Kitagawa, Takeshi
Author_Institution :
NTT-Opto-electron. Lab., Ibaraki, Japan
Abstract :
A gain-switched Nd-doped silica waveguide laser pumped by laser diodes (LDs) was successfully realized. The light from two CW operated and modulated LDs was synthesized and used to investigate gain switching characteristics under various pump conditions. Pulses with a peak power of 1.0 mW and a full width at half maximum of 480 ns were obtained at a repetition rate of 150 kHz. The average modulated pump power was 17 mW and the bias pump power was 35 mW. A gain-switched pulse repetition rate of 25 to 150 kHz was achieved by controlling the pump power of a CW operated and a modulated LD.<>
Keywords :
integrated optics; neodymium; optical glass; optical modulation; optical pumping; optical switches; optical waveguides; semiconductor switches; solid lasers; 1 mW; 17 mW; 35 mW; 480 ns; CW operated; Nd-doped silica planar lightwave circuit; Nd-doped silica waveguide laser; average modulated pump power; bias pump power; diode laser pumps; gain switching characteristics; gain-switched; gain-switched pulse repetition rate; laser diodes; modulated LDs; nonlinear optics; optical switches; peak power; pump conditions; repetition rate; semiconductor switches; waveguide laser; Laser excitation; Laser transitions; Optical pulse generation; Optical pulses; Optical waveguides; Planar waveguides; Pump lasers; Silicon compounds; Switching circuits; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
