Title :
High-repetition tunable picosecond dye laser pumped by a copper bromide laser
Author :
Lei, Zhu ; Liejian, Qian ; Guiyan, Zhang ; Fucheng, Lin
Author_Institution :
Shanghai Inst. of Opt. & Fine Mech., Acad. Sinica, China
fDate :
2/1/1991 12:00:00 AM
Abstract :
It is reported that by mixing the saturable absorber DODCI with the gain medium Rh6G, 30-ps pulses can be generated from a short-cavity dye laser pumped by a copper bromide laser with a 25-ns pulsewidth and a 10-kHz repetition rate. A theoretical analysis of pulse shortening by this method is shown to agree with experimental results. A dispersion-amplifier system was employed for synchronous amplification and frequency tuning of the dye laser. The single-pulse energy was up to 0.15 μJ with a linewidth-of 1.0 cm-1 in a one-stage amplifier, and the amplified spontaneous emission (ASE) background noise was reduced to below 10%. By simply rotating the grating and occasionally adjusting the thickness of the dye cavity slightly, the laser can be tuned continuously from 570 to 590 nm with a nearly Fourier-transform-limited linewidth. The repetition rate can be varied from 10 to 20 kHz
Keywords :
dye lasers; high-speed optical techniques; laser tuning; optical pumping; spectral line breadth; 0.15 muJ; 10 kHz; 570 to 590 nm; Fourier-transform-limited linewidth; amplified spontaneous emission background noise; dispersion-amplifier system; dye cavity; frequency tuning; gain medium; grating; high repetition tunable picosecond dye laser; one-stage amplifier; pulse shortening; pulsewidth; repetition rate; saturable absorber; short-cavity dye laser; synchronous amplification; theoretical analysis; thickness; Copper; Laser excitation; Laser noise; Laser theory; Laser tuning; Optical pulse generation; Pulse amplifiers; Pump lasers; Space vector pulse width modulation; Tunable circuits and devices;
Journal_Title :
Quantum Electronics, IEEE Journal of
