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Proposal of ultra-high-power beams at the kilojoule iodine laser PALS
Novák, Ondřej ; Divoký, M. ; Böhm, P. ; Smrž, M. ; Turčičová, Hana ; Straka, Petr
The iodine kJ laser PALS is widely used by users. To extend the scope of the experiments, a proposal of new ultra-high-power (UHP) beams was done in detail. The model of the design is based on routine parameters of the laser PALS and on state-of-the-art of the ultra-high-power beams generation. Using the OPCPA technique, we propose two new alternative UHP beams at PALS with powers of 100 TW and 1 PW, respectively, including a pulse compressor and new front-end amplifiers. The amplification chain was simulated using coupled wave equations for optical parametric amplification. Layout of the two new beams in the existing PALS laser hall was also proposed.
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Produkce atomárního jódu
Picková, Irena ; Jirásek, Vít ; Schmiedberger, Josef
V článku je popsáno nové experimentální zařízení pro výbojovou generaci atomárního jódu pro COIL (chemický kyslík-jodový laser) a také DOIL (výbojový kyslík-jodový laser) systémy. Při této nové výbojové metodě pro generaci atomárního jódu bude využívána optická emisní spektroskopie pro diagnostiku plazmatu, tj. detekci některých částic přítomných v plazmatu. Tyto informace pomohou optimalizaci procesu produkce jódu.
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Studium plynných reakcí v chemickém kyslík-jódovém laseru
Jirásek, Vít ; Špalek, Otomar ; Čenský, Miroslav ; Kodymová, Jarmila ; Picková, Irena ; Jakubec, Ivo
Chemical methods of atomic iodine generation for a chemical oxygen-iodine laser (COIL) were studied using gaseous reactions of chlorine or fluorine atoms with hydrogen iodide. After optimization of reaction conditions, both methods provided high yields and concentrations of atomic iodine, which are sufficient for efficient laser generation in COIL. To get very high laser gain requires a prevention of the reaction of singlet oxygen with hydrogen iodide, which is a strong quencher of singlet oxygen in laser. A quasi-1D and CFD modeling was used for the experimental investigation support.
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