抄録
A high power, tunable dye laser system composed of a master oscillator and power amplifiers is demonstrated. A single-mode cw dye laser oscillator of simple composition generates a narrow-bandwidth spectrum of less than 20 MHz compared with that of a pulse dye laser oscillator; however, the output power from the cw dye laser is low. Therefore, a high efficiency pre-amplifier for the pulse dye laser is needed. We developed a simulation code to amplify spontaneous emission and also designed a pulse dye laser amplifier to increase efficiency. In experiments, we obtained a power output pulse with a narrow-bandwidth spectrum with a very high power gain greater than 10,000 by using a four-pass pre-amplifier. Good agreement is obtained between the calculated and measured amplifier characteristics.
