Publications by authors named "Shuichi Fujikawa"
A transverse-flow radio-frequency-exited CO2 laser amplifier was evaluated by a short-pulse seed laser. We constructed a prototype transverse-flow amplifier for the extreme UV laser-produced-plasma source. The electrical power for the discharge was enhanced to 100 kW at a 100% duty cycle.
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- The team built a CO2 laser system that uses a transverse-flow, RF-pumped continuous wave (CW) laser.
- They conducted tests with the laser running at full power, reaching up to 60 kW input energy.
- The system produced an output of 1.90 kW at a frequency of 100 kHz, achieving an electrical-to-optical efficiency of 3.1%.
We have demonstrated high-peak-power generation at 1 kW average power by applying an acousto-optic Q switch to a quasi-cw diode-pumped Nd:YAG master oscillator power amplifier. We achieved a maximum peak power of 2.3 MW by driving the Q switch in burst mode.
View Article and Find Full Text PDFA novel configuration for a multirod solid-state laser system is proposed. We stabilize the thermal-lens-dependent variation in the output-beam parameters by extracting the laser beam from the collimating point of periodic beam propagation. The performance is confirmed with a 100-W class diode-pumped Nd:YAG laser-amplifier system to demonstrate tenfold stabilization of the output-beam diameter.
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