Three Short Articles from Japanese "Laser Journal"
Abstract
A branch-selected oscillation of a pulsed TEA CO3 laser with three NaCi prisms placed in the cavity as dispersive elements is reported. 60 laser lines have been obtained. A two-stage synchronous ultraviolet pre-ionization pulsed TEA CO3 laser device was used. Pre-ionization was accomplished by the surface sparkling of the stainless steel array. Main discharger and pre-ionizer both had their individual power supply and the time delay was controlled by controllable time-delay trigger. To obtain the steady and homogeneous arc-free discharging, propylamine of low ionization was used as the seed 3 gas. Discharging volume was 7x7x100 cu cm . The main-discharging energy-saving capacitor for the main discharging circuit (for each stage) was 0.047 microfarads and the capacitor for pre-ionization circuit was 0.07 microfarads. To ensure long-term arc-free operation and to ensure smooth modulation, the proportion of the working gas was chosen as: CO2 :N2:He=3:2:6. Total gas pressure was 56Otorr and input power was controlled to be within 100J/l. Time delay between main discharging and pre-ionization was selected to be 1 microsec. The device was operated in single-pulse mode with about 3- 4 pulses/min.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 23, 1993
- Accession Number
- ADA268249
Entities
Organizations
- National Air and Space Intelligence Center