Patent ID: 6870664
Filing Date: 2005-03-22
Classification: G02F

Abstract:
1. A system for producing a useful optical pulse, comprising: a source of an input pump pulse; a source of a signal pulse; a first dichroic beamsplitter for receiving said input pump pulse and said signal pulse, said first dichroic beamsplitter being highly reflective for said signal pulse and highly transmissive for said input pump pulse; a first optical parametric amplifier nonlinear crystal for receiving said signal pulse and input pump pulse, said input pump pulse having energy and said first optical parametric amplifier nonlinear crystal transferring part of said energy to said signal pulse to produce a first amplified signal pulse and a first depleted pump pulse; a second dichroic beamsplitter for receiving said first amplified signal pulse and said first depleted pump pulse, said second dichroic beamsplitter being highly reflective for said first amplified signal pulse and highly transmissive for said first depleted pump pulse; a second optical parametric amplifier nonlinear crystal for receiving said first amplified signal pulse and said first depleted pump pulse, said first depleted pump pulse having energy and said first optical parametric amplifier nonlinear crystal transferring part of said energy to said first amplified signal pulse to produce a second amplified signal pulse and a second depleted pump pulse; and a third dichroic beamsplitter for receiving said second amplified signal pulse and said second depleted pump pulse wherein said second depleted pump pulse is discarded and said second amplified signal pulse results in said useful optical pulse.