Patent ID: 6049554
Filing Date: 2000-04-11
Classification: H01S

Abstract:
A high power light source system comprising:a first optical cavity comprisinga first semiconductor gain element having an internal optical cavity portion for producing a radiation beam,a wavelength tuning reflector element in an external optical cavity portion coupled to receive the radiation beam from said first semiconductor gain element and for reflecting a portion of said radiation beam back into said internal optical cavity for tuning said gain element to emit radiation at a selected wavelength within a tunable bandwidth and provide an output beam of the selected wavelength radiation,said optical cavity portions defining said first optical cavity; anda second optical cavity comprisinga second semiconductor gain element separate from said first optical cavity for receiving said output from said first optical cavity for enhancing the gain of said output beam, said second semiconductor gain element having a flared gain section of monotonically increasing lateral dimension from its input to its output.