Fast-axis collimator array
AssigneePower Photonic Ltd.
InventorsRoy McBride, Matthew Oren Currie, Jozef Jacek Wendland
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Abstract
A micro-optical element for use with an edge-emitting laser diode bar stack, the element comprising a plurality of spaced apart fast-axis collimators formed as a monolithic array, wherein the spacing between the collimators in the fast-axis varies across the micro-optic element. A method of manufacturing a micro-optical element for use with a laser diode bar stack, using a wavelength stabilized CO2 laser is also described.
Claims19
A micro-optical element for use with an edge-emitting laser diode bar stack, the element comprising a plurality of spaced apart fast-axis collimators formed as a monolithic array, wherein the plurality of fast-axis collimators each have characteristics determined by emitter locations in the measured laser diode bar stack and the spacing between the collimators in the fast-axis varies across the micro-optic element.
A method of manufacturing a micro-optical element for use with a laser diode bar stack, comprising the steps:
- (a) providing a wavelength stabilized CO2 laser with stable laser power operating on a laser line selected from the CO2 spectrum;
- (b) providing a computer controlled acousto-optic modulator to give temporal control on laser pulses from the CO2 laser;
- (c) providing a computer controlled X-Y translation stage;
- (d) locating a monolithic substrate on the translation stage;
- and
- (e) operating the laser, acousto-optic modulator and the translation stage to ablate portions of the substrate in a shot-by-shot raster scan regime and form an array of predetermined lens forms on the substrate.
Dependencies are inferred from the claim text.