Talbot cavity diode laser with uniform single-mode output

A diode laser comprising,

• a semiconductor body having an active light emitting region with a plurality of waveguides, said waveguides terminating in a light emitting plane, said waveguides being substantially equally spaced apart in said light emitting plane;
• a pair of reflectors, a first one of said reflectors being defined by a back face of said semiconductor body;
• and
• edge reflector means associated with said pair of reflectors for increasing feedback of emitted light into edgemost ones of said waveguides.

A laser comprising,

• a laser bar having a reflective face, and an emitting face with a plurality of substantially identical, equally spaced light emitting elements;
• a reflector being spaced from said emitting face by a distance of approximately na2/.lambda., where n is a positive integer, a is the spacing between said light emitting elements and .lambda. is the wavelength of light emitted by said elements;
• and
• a pair of side mirrors extending from said emitting face to said reflector and spaced a distance a/2 beyond edge emitting elements.

A laser comprising,

• a plurality of diode lasers, each having a reflective back face and a light emitting front face;
• a plurality of light transmissive fibers, each fiber having a first end coupled to a front face of one of said diode lasers, a second end of said fibers terminating in a bundled plane, said second ends being equally spaced;
• and
• a transparent cylinder having a first end coupled to said second ends of said fibers, a second end opposite from the first end with a partially reflective coating thereon, and a highly reflective circumferential surface.