A 1 GW NEODYMIUM GLASS LASER,
Abstract
The system consists of a master laser and a two-stage laser amplifier. The master-laser head comprises a neodymium glass rod 20 mm in diameter and 260 mm long, an IFP-5000 2-kj flashlamp, and a cylindrical pump reflector. The amplifier heads are identical and in each case the active rod is bathed in an aqueous solution of sodium nitrite to retard uv-induced aging of crystals and to reduce thermal stresses. The output of the 100-cm-long resonator was passed through a 30% reflective stack and the Q-switching was done by means of a rotating prism (30,000 rpm) and a plane-parallel plate with an end reflector which also served as an angular selector. The master laser operated in the free-running mode at an efficiency of 3.5%, generating 140-150 MW 70 nanosec pulses with a 3-5 min of arc beam divergence. Seventy nanosec 500 MW and 1 GW pulses were obtained at the first and second (output) stages, respectively, for an 80 MW input. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 18, 1968
- Accession Number
- AD0681257
Entities
People
- A. A. Mak
- A. I. Stepanov
- D. S. Prilezhaev
- G. G. Malinin
Organizations
- National Air and Space Intelligence Center