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PALS ASTERIX IV

Amplifier 1 Amplifier 2 Amplifier 3 Amplifier 4 Amplifier 5 Spatial filter 1 Spatial filter 2 Spatial filter 3 Spatial filter 4 Spatial filter 5 Faraday rotator Oscillator
14,736 bytes
Schematic (Image map, click on laser part to view photo)
16,982 bytes
Detailed Schematic
4,740 bytes
Generation of a double pulse pattern in the main beam by seeding the final amplifier A5 with two pulses of different intensities from Double Pulse Generator
72,211 bytes
Diagram of target chamber (from target facilities)
7,112 bytes
Schematic of amplifier gas flow (Ar + C3F7I which is photoionized)
20,120 bytes
Schematic of 30 kV Xe flashlamps, 10 µs, 250-300 nm UV
209,747 bytes
Oscillator and pulse selection system, with Pockels cells in center (see theory)
77,853 bytes
First vacuum spatial filter, beam expands from 8 to 22 mm. (see theory)
210,379 bytes
Output end of first power amplifier (double passed) (see theory)
149,258 bytes
Second spatial filter, 22 to 45 mm expansion. Relay mirror on left sends beam toward next amplifier.
199,636 bytes
Output end of second amplifier, 2.7 m. White tubes leading to the room below re-supply the laser medium after each shot.
209,687 bytes
Third spatial filter, 45 to 90 mm expansion
175,452 bytes
Output end of third amplifier, 3.24 m
165,909 bytes
Faraday rotator, between third and fourth amplifier. Box-like object on left is polarizer mount; coil generating the longitudinal magnetic field is downstream on right
144,858 bytes
Forth spatial filter, 90 to 148 mm expansion
152,042 bytes
Input end of fourth amplifier, 6.48 m. Black cables carry high voltage from capacitor banks (underneath) to six flashlamp sections. (see also)
142,647 bytes
Fifth spatial filter, 148 to 290 mm expansion
190,906 bytes
Fifth amplifier, 8.64 m. It is composed of eight sections each more than one meter long. The inner quartz tube contains Ar + C3F7I gas pressurized to three atmospheres (see also Dr. Josef Krása of the IPP).
176,125 bytes
MPQ photo before the move
101,674 bytes
laser support rails (I-beams) (Prague)
135,769 bytes
basement for capacitor banks (Prague)