Phase conjugate laser with a temporal square pulse
US4972156A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Jun 28, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/206
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system and method for producing relatively square laser pulses derived from relatively Gaussian laser pulses. The system comprises a phase conjugate laser system that comprises a laser oscillator, an amplifying medium and a phase conjugate mirror having a nonlinear confined at a predetermined pressure. The mirror is adapted to truncate the front portion of an applied laser pulse. A plasma switch is disposed between the laser oscillator and the amplifying medium that has a gas confined therein at a predetermined pressure. The plasma switch and phase conjugate mirror cooperate to truncate the laser pulse to produce a laser pulse having a relatively square shape. Controlling the pressures in the plasma switch and phase conjugate mirror provides a means of controlling the formation of square-shaped laser pulses. In addition, a delay line may be employed in the system that is controllable in length that assists in controlling the truncation of the pulse in the plasma switch. A method of forming a square laser pulse in accordance with the invention comprises the following steps. A laser pulse is propagated through a plasma switch, and the pressure therein is adjusted to truncate the re…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.