High Efficiency, Wavelength Stabilized Laser Diode Using AWG's And Architecture For Combining Same With Brightness Conservation
First Claim
Patent Images
1. A high power laser source comprising:
- a first chip including a multi-mode semiconductor waveguide for providing gain in a predetermined wavelength band, wherein each semiconductor waveguide has a first reflector at one end;
a second chip including an array waveguide grating having an input port coupled to the semiconductor waveguide, and an output port;
a second reflector disposed to receive light from the array waveguide grating output port and to reflect a portion of the light back into the array waveguide grating, thereby defining a laser cavity with the first reflector;
wherein;
the semiconductor waveguide is dimensioned to support propagation of multiple transverse modes of light having wavelengths in the predetermined wavelength band; and
the multiple transverse modes on the first chip are optically coupled to the input port of the array waveguide grating on the second chip.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to high power semiconductor lasers based on a laser diode array waveguide grating (DAWG) in which the wavelength is stabilized using an array waveguide grating (AWG) in an external cavity configuration. Another aspect of the present invention relates to techniques for efficiently coupling optical gain element arrays to an AWG. Another feature provides for the efficient and brightness-conserving combination of multiple high power DAWG lasers into a single output.
-
Citations
22 Claims
-
1. A high power laser source comprising:
-
a first chip including a multi-mode semiconductor waveguide for providing gain in a predetermined wavelength band, wherein each semiconductor waveguide has a first reflector at one end;
a second chip including an array waveguide grating having an input port coupled to the semiconductor waveguide, and an output port;
a second reflector disposed to receive light from the array waveguide grating output port and to reflect a portion of the light back into the array waveguide grating, thereby defining a laser cavity with the first reflector;
wherein;
the semiconductor waveguide is dimensioned to support propagation of multiple transverse modes of light having wavelengths in the predetermined wavelength band; and
the multiple transverse modes on the first chip are optically coupled to the input port of the array waveguide grating on the second chip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
Specification