Apparatus and methods for altering one or more spectral, spatial, or temporal characteristics of a light-emitting device are disclosed. Generally, such apparatus may include a volume Bragg grating (VBG) element that receives input light generated by a light-emitting device, conditions one or more characteristics of the input light, and causes the light-emitting device to generate light having the one or more characteristics of the conditioned light.

A light source for structured light, comprising a plurality of light source elements arranged in an array, wherein the light source elements are configured to be driven in the following two modes:—a calibration mode, wherein only a part of light source elements are adapted to be driven; and—a normal mode, wherein the rest of the light source elements are adapted to be driven.

In various embodiments, the beam parameter product and/or numerical aperture of a laser beam is adjusted utilizing a step-clad optical fiber having a central core, a first cladding, an annular core, and a second cladding.

A laser source includes a topological cavity for nonreciprocal lasing, a magnetic material and an optical waveguide. The magnetic material is arranged to interact with the topological cavity. The optical waveguide is arranged to receive light extracted from the topological cavity upon breaking of time-reversal symmetry in the topological cavity.

A laser device is provided. The laser device includes a bottom plate, a frame body, a heat sink and a light-emitting chip. The light-emitting chip is located on a surface of the heat sink away from the bottom plate. The light-emitting chip includes a plurality of first protrusions and/or a plurality of first depressions, the plurality of first protrusions and/or the plurality of first depressions are located on a first surface of the light-emitting chip; the heat sink includes a plurality of second depressions and/or a plurality of second protrusions, the plurality of second depressions and/or the plurality of second protrusions are located on a second surface of the heat sink; the plurality of first protrusions are located in the plurality of second depressions, and the plurality of second protrusions are located in the plurality of first depressions.

In various embodiments, multiple laser emitters are arranged in one or more linear stacks and emit beams to one or more linear stacks of interleaving mirrors. The interleaving mirrors direct the beams to a shared exit point, thereby forming an output beam stack. The optical distances traversed by each beam from its emitter to the shared exit point are all equal to each other.

The invention relates to a laser assembly (1) comprising a diode laser bar (2), a heat sink (4) and at least one cover (7). The laser bar is located between the heat sink and the cover. The heat sink and/or the cover is/are coated with nanowires (16) or nanotubes via which the contact between the laser bar and the heat sink and/or the cover is established.

A multilayer interconnect is described which enables electrically connecting a complex distribution of VCSEL or other light emitter elements in a large high density addressable array. The arrays can include many groups of VCSEL elements interspersed among each other to form a structured array. Each group can be connected to a contact pad so that each group of light emitter elements can be activated separately.

A low numerical aperture fiber output diode laser module, which having several independent diode lasers, and collimated and converged the light beam, for the coupling the light to the core optical fiber with a core diameter of 105 um and a numerical aperture of 0.12. Compared with general products with a numerical aperture of 0.22, the light output angle is reduced to 55%, and use a general blue laser diode for verification. Use an optical software for facilitating the design and optimization of the parameters of the optical lens module.

An apparatus for stacking and coating of very short cavity laser diode arrays. The apparatus includes an array holder fixture to securely hold the very short cavity laser diode arrays and spacer arrays, and a stacking plate. The array holder fixture including a top-side presser to secure a stack of very short cavity laser arrays and spacer arrays from a first end of the stack, a bottom-side presser to secure the stack of very short cavity laser arrays and spacer arrays from a second end of the stack, and a pair of side clamps. The array holder fixture is operatively coupled to the stacking plate during the stacking of the very short cavity laser diode arrays and spacer arrays.