Title :
High-gain ultraviolet Cu-II laser in a segmented hollow cathode discharge
Author :
Donkó, Zoltán ; Szalai, L. ; Rózsa, Károly ; Ulbel, Maria ; Pöckl, Manfred
Author_Institution :
Res. Inst. for Solid State Phys., Hungarian Acad. of Sci., Budapest, Hungary
fDate :
1/1/1998 12:00:00 AM
Abstract :
We report measurements of the discharge and laser characteristics of an ultraviolet (UV) copper ion laser radiating on the 248.6- and 270.3-nm transitions. Our 50-cm active length laser operates in a high-voltage segmented hollow cathode discharge with Brewster windows and external mirrors. The lowest threshold currents were 7.3 and 5.6 A for the above transitions, respectively. The threshold current was found to increase with decreasing active length. We obtained superior gain characteristics (to 11.2 and 8.8%/m gain for the 248.6-and 270.3-nm transitions, respectively, at 0.3 A/cm linear current density) compared with previous studies on UV Cu ion lasers in conventional hollow cathode discharges
Keywords :
copper; glow discharges; ion lasers; laser beams; laser mirrors; laser transitions; laser variables measurement; 248.6 nm; 270.3 nm; 5.6 A; 50 cm; 7.3 A; Brewster windows; Cu; Cu ion lasers; Cu-II laser; UV lasers; active length; active length laser; discharge characteristics; external mirrors; gain characteristics; high-voltage segmented hollow cathode discharge; laser characteristics; segmented hollow cathode discharge; threshold currents; transitions; Atomic beams; Cathodes; Copper; Gas lasers; Laser excitation; Laser transitions; Pump lasers; Sputtering; Threshold current; Voltage;
Journal_Title :
Quantum Electronics, IEEE Journal of
