An integrated optical beam steering system is configured in three stages to provide beam steering for image light from an imager (e.g., laser, light emitting diode, or other light source) to downstream elements in a display system such as an exit pupil expander (EPE) in a mixed-reality computing device. The first stage includes a multi-level cascaded array of optical switches that are configurable to spatially route image light over a first dimension of a two-dimensional (2D) field of view (FOV) of the display system. The second waveguiding stage transfers the image light along preformed waveguides to a collimator in the third stage which is configured to collimate the image light along the first dimension of the FOV (e.g., horizontal). The waveguiding and collimating stages may be implemented using lightweight photonic crystal nanostructures.

Integrated optical beam steering system

The present invention discloses a one-dimensional radar scanning emission device based on a microstructural laser and a preparation method thereof. The one-dimensional radar scanning emission device comprises: a substrate; a multi-path laser arranged on the substrate and distributed in an array mode, wherein the emitting angles between the lasers are different, the emitting angles are inclined angles formed by emitting lasers of the lasers and a substrate plane to achieve a multi-path microstructural laser with variable inclined angles and low divergence angles; and a circuit board comprisinga plurality of electric control switches controlled by a shifting register and connected with a plurality of pins and configured to control the electric control switches to supply power to the lasersconnected with the pins, wherein the multi-path microstructural laser with variable inclined angles and low divergence angles can be taken as the main feature of the invention, each-path laser regulates the distribution of the microstructure itself and the size to emit a nearly parallel laser beam according to a special angle, and the beam scans objects in a certain range and is reflected by the objects to achieve position determination so as to achieve high power output, small sizes and high integration level.

One-dimensional radar scanning emission device based on microstructural laser and preparation method thereof

The invention discloses a surface emitting laser array, and the array comprises a plurality of laser single tubes located on the same chip, wherein the laser single tubes are longitudinally arranged,and the adjacent laser single tubes are arranged in a staggered mode and used for achieving carrier lateral injection to active layers in light beam output areas of the laser single tubes. A shallow etching groove is formed in a light beam output area of the laser single tubes, and a deep etching groove is formed in a DBR area. According to the invention, the cross section of the output light beamof the surface emitting laser array with the single laser tubes arranged in the longitudinal direction in the staggered mode is in a rectangular step shape, the light beam shaping difficulty is greatly reduced through the light beam shape, and the high-quality and high-power-density output light beam can be easily obtained through light spot shearing and splicing; and the regulation and control and stability of a laser mode are ensured through the shallow etching groove and the deep etching groove.

Surface emitting laser array

A curved conical photonic crystal laser device, an array, and an array light source group. The curved conical photonic crystal laser device comprises a ridge waveguide part (3), a bent waveguide part (4) and a conical light amplification part (5) that are sequentially connected. The ridge waveguide part (3) is a straight waveguide, the bent waveguide part (4) has a radian, and the conical light amplification part (5) is gradually expanded in the light output direction. By introducing a photonic crystal structure and adjusting an intra-cavity mode, narrow vertical and horizontal divergence angles are achieved, and an optical collimation and compression system is simplified; by properly designing the waveguide structure, waveguide modes of different parts are matched, and multi-angle wide-range laser output can be achieved in the condition that a machine table does not need to be rotated; in addition, the range and precision of laser irradiation and scanning are improved, the angular resolution is adjustable and low, the structure is compact, the stability is high, costs are low, and the laser device has wide application prospects in the fields of laser ranging, laser imaging, laser radars and the like.

Curved conical photonic crystal laser device, array and array light source group

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Curved conical photonic crystal laser device, array and array light source group