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Figure 1 - CAD model for the EPAC Pump laser lab.
The EPAC Pump laser, shown in Figure 1, is currently under
development and is due to be commissioned and operational by the summer of
2023. It is based on the D100X
design with several changes to make it more suited for pumping the Titanium Sapphire (Ti:S) gain
media, which requires 90 J in 15 ns pulses at 515 nm wavelength. These changes include:
- Frequency
doubling of output beam: Ti:S gain media requires the pump laser
to have a wavelength of 515 nm, which is achieved by second
harmonic generation of the 1030 nm output beam.
- Second
100 J amplifier: Although in its first phase it will have
a single 100J-level amplifier, the design allows for a second 100J-level
amplifier to be added to pump the EPAC amplifier (Figure 2) with 2 beams simultaneously at
lower energy each, to increase the lifetime of optics.
Figure 2 - Major sections of the EPAC Pump laser.
Expected
Parameters list:
Pulse energy (at 1030 nm) 120 J
Pulse energy (at 515
nm) 90 J
Pulse duration 1-15 ns
Repetition rate 10 Hz
Output beam size 75x75 mm
