Systems, methods, and other embodiments for utilizing electrical and digital technologies for monitoring and controlling laser sources from an entirely separate location are disclosed. In particular, the present invention relates to using any radio frequency signal in conjunction with driving and control capabilities for application with TO-style laser diodes and TO-style solid-state laser devices of any, and all powers, currents, or voltages.

Systems, methods, and other embodiments for a new compact narrowband diode-pumped solid-state laser device enabled by Volume Bragg Grating (VBG) technology and capable of operating at the watt or higher output power level. This laser is stable, operates in a transverse electromagnetic (TEM) output mode, and with a single-narrowband (<1 kHz FWHM) longitudinal mode with acceptable relative intensity noise (RIN) performance from 1-100 GHz. In a preferred embodiment of the present invention, the TEM output mode is a TEM.sub.00 Gaussian output mode.

An airport runway approach lighting apparatus is disclosed. According to one embodiment. the airport runway approach light includes a visible light source configured to emit a visible light brain and an infrared light source configured to emit an infrared beam. A first lens is attached to the visible light source to change the visible light beam emitted from the visible light source to a desired visible light beam pattern. The infrared light source includes a plurality of semiconductor laser diodes distributed on a surface of a laser diode chip in an array.

An emitter of electromagnetic radiation is configured for modes of operation providing fields of illumination of different widths, and a photodetector is configured for time-of-flight and proximity measurements by detecting electromagnetic radiation that is emitted by the emitter and reflected to the photodetector. The emitter is operated by a driver, which is configured for an alternation between the modes of operation. A time-of-flight measurement is performed when the field of illumination is narrow, and a proximity or ambient light measurement is performed when the field of illumination is wide.

The present embodiment relates to a light-emitting device that enables reduction in attenuation or diffraction effect caused by a semiconductor light-emitting device with respect to modulated light outputted from a spatial light modulator, and the light-emitting device includes the semiconductor light-emitting device that outputs light from a light output surface and the reflection type spatial light modulator that modulates the light. The spatial light modulator includes a light input/output surface having the area larger than the area of a light input surface of the semiconductor light-emitting device, modulates light taken through a region facing the light output surface of the semiconductor light-emitting device in the light input/output surface, and outputs the modulated light from another region of the light input/output surface to a space other than the light input surface of the semiconductor light-emitting device.

A laser module produces pulsed laser energy in a wavelength range of 495-580 nm based on duration, peak power, and interval parameter information. An envelope timer controls the total duration of all micropulses based on the duration and interval parameters via a pulse-width modulated (PWM) output to a micropulse timer, which in turn outputs a PWM micropulse signal. A light emitting diode driver outputs a laser current through a diode based on the micropulse signal and a dimming signal to produce the pulsed laser energy. The integrator compares a signal corresponding to a detected power level of the laser energy to a signal corresponding to the peak power parameter and outputs the dimming signal. The resulting micropulse durations are in the range of 50 to 300 microseconds for periods of about 2 milliseconds, with a duty cycle ranging from 5 to 15%. The overall pulse parameters are duration from 10 microseconds to 1.5 seconds, with periods of any value. The pulsed laser energy is delivered by ophthalmologic laser treatment devices to an eye of a patient.

An irradiation system includes: a first beam source configured to output a first laser beam and a second beam source configured to output a second laser beam, in which the second laser beam has a higher beam quality higher than that of the first laser beam;

optics arranged to focus the first and second laser beams; and a beam guiding system including a first beam path along which the first laser beam is guided, and a second beam path along which the second laser beam is guided, in which the beam guiding system includes a beam combiner to superimpose the first and second laser beams, the first beam source is a pump laser, the second beam source is a laser resonator, and the beam guiding system further includes a beam switch adapted to feed the first laser beam into a pump laser beam path and/or into the first beam path.

A laser assembly (1710) for generating an assembly output beam (1712) includes a laser subassembly (1716) including a first laser module (1716A) and a second laser module (1716B), a transform assembly (1744), and a beam combiner (1746). The first laser module (1716A) emits a plurality of spaced apart first laser beams (1720A). The second laser module (1716B) emits a plurality of spaced apart second laser beams (1720B). The transform assembly (1744) is positioned in a path of the laser beams (1720A) (1720B). The transform assembly (1744) directs the laser beams (1720A) (1720B) to spatially overlap at a focal plane of the transform assembly (1744). The beam combiner (1746) is positioned at the focal plane that combines the lasers beams (1720A) (1720B) to provide a combination beam. The laser beams (1720A) (1720B) directed by the transform assembly (1744) impinge on the beam combiner (1746) at different angles.

A time-of-flight 3D imaging system includes a light source having a plurality of P-N junctions in electrical series, an imaging sensor, and a time measurement device configured to measure the elapsed time-of-flight between a pulse of output light being emitted from the plurality of P-N junctions in series and incoming light including the pulse of output light being detected at the imaging sensor.

The invention relates to a radiation-emitting semiconductor chip, having: a semiconductor body comprising an active region which is designed to generate electromagnetic radiation; a resonator which comprises a first end region and a second end region; and at least one cut-out in the semiconductor body, said cut-out passing completely through the active region, wherein: the active region is situated in the resonator, and the cut-out defines a reflectivity for the electromagnetic radiation. The invention also relates to a radiation-emitting semiconductor component, a method for producing a radiation-emitting semiconductor chip, and a method for producing radiation-emitting semiconductor components.