Passively Q-switched nanosecond pulse-train Nd:YAG laser system

3. CONCLUSIONS
In conclusion, we found repetitive passive Q-switching technology using Cr4:YAG saturable absorber to be an efficient
method for stable generation of the nanosecond pulse trains. Effective compression of a laser pulses was obtained.
Reliable operation of the SBS compressor for the laser pulse train energy higher than 50 mJ requires ultrafiltration of the
SBS active medium. For high efficiency of the EUV and soft X-ray production further amplification of the laser pulse
train is needed. It will be realized by applying second double pass Nd:YAG amplifier at the SBS phase conjugation
scheme.
ACKNOWLEDGEMENTS
The authors wish to thank Z. Mierczyk for providing Cr4:YAG saturable absorbers. We are also grateful P. Wachulak
for the technical assistance. This work was supported by the following grants of the Ministry of Scientific Research and
Information Technology ofPoland: No. 3 TO8C 002 27, No. 3 Ti lB 03 i 27 and No. 120/E-4i0/SPB/Eureka/O-13/DWN
727.
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