Title :
Short pulse injection seeding of Q-switched Nd:glass laser oscillators-theory and experiment
Author :
Basu, Santanu ; Byr, R.L.
Author_Institution :
Ginzton Lab., Stanford Univ., CA, USA
fDate :
1/1/1990 12:00:00 AM
Abstract :
A 0.5-GW-peak-power solid-state laser source that is based on injection seeding a Q-switched Nd:Glass laser is discussed. In the first experimental demonstration, a Q-switched oscillator producing 101 mJ was seeded by a train of 11-ps pulses from a CW (continuous-wave) mode-locked laser to produce injection-mode-locked pulses under a 91-ns envelope. A theoretical analysis of injection seeding of a high-gain Q-switched oscillator by the output of a mode-locked oscillator is presented. The numerical analysis predicts the minimum signal power required for injection mode locking and the temporal shape of the output pulse. The experimental results agree well with the theoretical predictions. The amplification demonstrated by this technique is 104.4 dB, which is much greater than that demonstrated by a multipass or regenerative amplifier. The experimental advantages of injection mode locking include greater than 100 dB of effective amplification and noncritical cavity length adjustment of the seed resonator
Keywords :
Q-switching; laser cavity resonators; laser mode locking; neodymium; solid lasers; 0.5 GW; 101 mJ; 104.4 dB; 11 ps; 91 ns; Nd:glass laser oscillators; Q-switched; continuous-wave; high-gain Q-switched oscillator; injection seeding; injection-mode-locked pulses; minimum signal power; mode-locked laser; noncritical cavity length adjustment; output pulse; regenerative amplifier; seed resonator; short pulse injection seeding; solid-state laser source; temporal shape; Glass; Laser excitation; Laser mode locking; Laser noise; Neodymium; Optical pulses; Oscillators; Power lasers; Pump lasers; X-ray lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
