Claims
- 1. 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 90°−β to said first longitudinal axis, where β lies in a range between 0° and approximately 20°; 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 90°−β′ to said first longitudinal axis, where β′ lies in a range between 0° and approximately 20°.
- 2. The apparatus of claim 1, wherein said first coupling grating is disposed across said amplifier section at an approximate angle 45°+β/2 to the first longitudinal axis.
- 3. The apparatus of claim 1, wherein said single-mode-master-oscillator section includes a waveguide with a bottom part that has a thickness of between approximately 0.10 microns and 0.20 microns, and wherein the waveguide has a top part adjacent to the coupling grating, the top part being between approximately 0.01 microns and 0.10 microns.
- 4. The apparatus of claim 3, wherein said single-mode-master-oscillator section further includes an aftergrating waveguide layer with a thickness between approximately 0.04 microns and approximately 0.16 microns.
PRIORITY
This application claims the benefit of U.S. Provisional Application Ser. No. 60/133,393, filed May 10, 1999, and U.S. application Ser. No. 09/468,396, both of which are hereby incorporated herein by reference.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
5103456 |
Scifres et al. |
Apr 1992 |
A |
5440576 |
Welch et al. |
Aug 1995 |
A |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/133393 |
May 1999 |
US |