Patent ID: 6459715
Filing Date: 2002-10-01
Classification: H01S

Abstract:
An apparatus comprising:(a) a single-mode master-oscillator region having a waveguide defined on a first end by a highly-reflective distributed Bragg reflector (DBR) mirror, and on a second end by a highly reflective DBR mirror, and having at least one semitransparent DBR mirror between the first end and the second end, the waveguide having a first longitudinal axis; (b) a first broad-contact amplifier section coupled to said single-mode-master-oscillator section by a first coupling grating disposed within the waveguide of said single-mode-master-oscillator region, and placed between said first end and said at least one semi-transparent DBR mirror, said broad contact amplifier including, an output side and a second longitudinal axis, the second longitudinal axis being at an angle approximately 90Â°âˆ’&bgr; to said first longitudinal axis, where &bgr; lies in a range between 0Â° and approximately 20Â°; and (c) a second broad-contact-amplifier section coupled to said single-mode-master-oscillator section by a coupling grating placed between said second end and said at least one semitransparent DBR mirror, said broad contact amplifier including an output side and a third longitudinal axis, the third longitudinal axis being at an angle approximately 90Â°âˆ’&bgr;â€² to said first longitudinal axis, where &bgr;â€² lies in a range between 0Â° and approximately 20Â°.