A light source module that emits a combined laser beam, and includes: a plurality of semiconductor laser elements; and a control circuit that controls power of a laser beam emitted by each of the semiconductor laser elements. The semiconductor laser elements include: a first element group that emits a first laser beam; and a second element group that emits a second laser beam. The combined laser beam includes at least one of the first laser beam or the second laser beam. The control circuit maintains an average combined-beam wavelength that is an average wavelength of the combined laser beam constant for a change in power of the combined laser beam. When the power of the first laser beam and the power of the second laser beam are equal to each other, an average wavelength of the first laser beam is longer than an average wavelength of the second laser beam.

Materials containing picocrystalline quantum dots that form artificial atoms are disclosed. The picocrystalline quantum dots (in the form of born icosahedra with a nearly-symmetrical nuclear configuration) can replace corner silicon atoms in a structure that demonstrates both short range and long-range order as determined by x-ray diffraction of actual samples. A novel class of boron-rich compositions that self-assemble from boron, silicon, hydrogen and, optionally, oxygen is also disclosed. The preferred stoichiometric range for the compositions is (B.sub.12H.sub.w).sub.xSi.sub.yO.sub.z with 3≤w≤5, 2≤x≤4, 2≤y≤5 and 0≤z≤3. By varying oxygen content and the presence or absence of a significant impurity such as gold, unique electrical devices can be constructed that improve upon and are compatible with current semiconductor technology.

A transmitting device, preferably containing at least two laser diodes and a scanning mirror, which is deflectable about its center (MP) and is arranged in a housing with a transparent cover element. The cover element is formed, at least in a coupling-out region, by a section of a monocentric hemispherical shell (HK) with a center of curvature (K) and is arranged to cover the scanning mirror in such a way that the center of curvature (K) of the hemispherical shell (HK) and the center (MP) of the scanning mirror coincide, and is formed in a coupling-in region by an optical block, comprising a toroidal entrance surface, in the special form of a cylindrical surface, at least one toroidal exit surface and at least two first mirror surfaces arranged between them, for deflecting and pre-collimating the laser beams.

Apparatus include a plurality of laser diodes configured to emit respective laser diode beams having perpendicular fast and slow beam divergence axes mutually perpendicular to respective beam axes, and beam shaping optics configured to receive the laser diode beams and to circularize an ensemble image space and NA space of the laser diode beams at an ensemble coupling plane. In selected examples, beam shaping optics include variable fast axis telescopes configured to provide variable fast axis magnification and beam displacement.

A light emitting device includes a base; a plurality of semiconductor laser elements disposed on the base and configured to emit light laterally from the plurality of semiconductor laser elements; a reflecting member disposed on the base and configured to reflect light from the semiconductor laser elements; a surrounding part disposed on the base and surrounding the semiconductor laser elements and the reflecting member; a wiring part disposed on the base so as to extend to a location outside of the surrounding part; a radiating body disposed on the surrounding part and having an opening; and a wavelength converting member that is located in the opening of the radiating body, the wavelength converting member being configured to convert a wavelength of light that is emitted from the plurality of semiconductor laser elements and reflected upward by the reflecting member.

A Lidar system includes a tunable laser configured to generate an output light signal and a photodiode array for receiving light from the tunable laser reflected from a target object. The tunable laser includes a feedback loop including a Mach-Zender interferometer, MZI, receiving the output light signal from the tunable laser, in which the MZI includes two optical paths receiving the output light signal. A phase shifter is provided in one optical path that is operable to produce a pre-determined shift in the phase angle of the light signal passing through the one optical path relative to the phase angle of the light signal passing through the other optical path. A photodiode configured to detect the interference signal generated by the MZI is operable to generate a photodiode current in response thereto. Circuitry converts the photodiode current to a control signal for controlling the tunable laser.

A light source module includes a first semiconductor laser element hermetically sealed, a second semiconductor laser element hermetically sealed, and firth to fourth optical elements. A first laser beam prior to reaching the first optical element has divergence angle θfd1 in a direction along a second optical axis and divergence angle θsd1 in a direction along a third optical axis, and satisfy 90°>θfd1>θsd1>0°. Divergence angle θfd12 of a first laser beam in the direction along the second optical axis decreases from divergence angle θfd1, the first laser beam having exited the first optical element. A component of a first laser beam in the direction along the second optical axis is collimated, the first laser beam having exited the second optical element. The same applies to the second semiconductor laser element.

A laser projection device that includes at least one laser diode for generating at least one laser beam, and at least one movable mirror element for deflecting the at least one laser beam. The laser projection device includes at least one control and/or regulation unit that is designed to control and/or regulate a brightness of the at least one laser beam as a function of a relative deflection speed of the at least one laser beam.

An optical sensor package includes an emitter die mounted to an upper surface of a package substrate. A sensor die is mounted to the upper surface of the package substrate using a film on die (FOD) adhesive layer that extends over the upper surface and encapsulates the emitter die. The sensor die is positioned in a stacked relationship with respect to the emitter die such that a light channel region which extends through the sensor die is optically aligned with the emitter die. Light emitted by the emitter die passes through the light channel region of the sensor die. The emitter die and the sensor die are each electrically coupled to the package substrate.

A laser package is described, the laser package comprising a plurality of laser diodes separately attached to at least one sub-mount having respective connecting pads, wherein, during operation, each of the laser diodes emits light having a fast axis and a slow axis defining a fast axis plane and a slow axis plane, wherein the fast axis planes of all laser diodes are parallel to each other and the distance between the fast axis planes of at least two laser diodes is smaller than the lateral distance between these laser diodes. Furthermore, a system with at least two laser packages is described.