Performance studies of a pulsed HF laser with a sliding discharge plasma cathode

The influence of and molecules on discharge equilibrium and F-atom production in a phototriggered HF laser using

“…HF lasers energized by electrical discharges have been the subject of many studies [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. The best laser performances, namely the maximum output energy and electrical efficiency, have been achieved using pre-ionized pulsed discharges between flat electrodes and reactive gas mixtures which contain H 2 and F 2 molecules [6,7].…”

“…The best laser performances, namely the maximum output energy and electrical efficiency, have been achieved using pre-ionized pulsed discharges between flat electrodes and reactive gas mixtures which contain H 2 and F 2 molecules [6,7]. However, these mixtures are very difficult to handle owing to the great risk of explosion, so that research has also been devoted to the non-chain HF laser [1][2][3][4][5][8][9][10][11][12][13][14][15]. For such a laser, the ro-vibrational levels of the HF molecule are produced by reaction between a hydrogenated compound RH and F-atom obtained from the dissociation, during the discharge, of a chemically inert fluorinated molecule.…”

“…In order to obtain a comprehensive understanding of these differences, the F-atom production must be carefully checked in both types of mixture because, for a spatially homogeneous medium, the laser performance is directly correlated to that production. A few experimental or theoretical works [8,[11][12][13][14] have been performed in order to determine the total F-atom density obtained from dissociation of SF 6 in HF/DF lasers energized by electrical discharges. Very recently, Tsikrikas and Serafetinides [15] published results about discharge and circuit simulation of a plasma cathode HF laser operating with propane.…”

Ανάπτυξη συστήματος laser Er: YAG, κυματοδήγηση της ακτινοβολίας του και έλεγχος της αποδομητικής του δράσης με τη μέθοδο του laser απαγόμενου φθορισμού

“…Μία έρπουσα εκκένωση χρησιμοποιείται ως ένα από τα κύρια ηλεκτρόδια εκκένωσης. Πλήρης περιγραφή και ανάλυση των κατασκευαστικών χαρακτηριστικών και της απόδοσης του laser HF δίνονται από τους Tsikrikas et al(45). Μία Η σύγκριση των τιμών διέλευσης της ακτινοβολίας των δύο lasers οδηγεί στο συμπέρασμα ότι η ακτινοβολία του laser HF διαδίδεται σε υψηλότερο ποσοστό, κατά 10% περίπου, μέσα από τις οπτικές ίνες.…”