Eye-safe laser system
US5181211A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | May 20, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/39
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An eye-safe laser operating at high efficiency, pulse repetition rate and power output is described. The laser comprises a diode-array pumped laser having a pumping wavelength range which produces a polarized output beam. The output beam passes through a nonlinear tunable parametric converter crystal having X, Y, and Z principal axes. Noncritical phase matching is produced in said laser by phase matching for a beam propagation parallel to a principal axis which results in a high efficiency of laser operation. The nonlinear tunable parametric converter crystal converts the wavelength of an otherwise unsafe laser beam output to one that is harmlessly absorbed by the human eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.