Abstract: An optical signal modifier for providing an amplified pulsed optical signal is provided. Said optical signal modifier comprises an optical time-domain filter arranged for filtering an optical signal amplified by an amplifier of the optical signal modifier. In this context, the optical signal modifier is configured to determine the corresponding time of the respective pulse and/or the corresponding location of the respective pulse. In addition to this, the optical signal modifier is configured to trigger the optical time-domain filter in accordance with said corresponding time and/or location of the respective pulse such that any signal outside said pulse is suppressed by the optical time-domain filter.

Abstract: A LiDAR test system includes a deterministically structured diffuser for redistributing LiDAR light onto an image plane of the diffuser with a particular distribution, area, or pattern. The light redistribution diffuses the wide angle LiDAR light in a preferential direction. A light receiving element, such as e.g. a detector, of the test system is placed in the image plane.

Abstract: A laser beam tester for laser beam timing and location determination with respect to a repetitive scan of at least one laser beam in a scan area based on at least one scan frame is provided. Said laser beam tester comprises an optical receiver configured to receive the at least one laser beam in an observation area, and a processor being in communication with the optical receiver. The processor is configured to determine the corresponding scan timing of the at least one laser beam. Furthermore, the processor is configured to associate the corresponding time domain of the laser beam tester with the scan timing of the at least one laser beam.

Abstract: A tracker for tracking timing and impact location with respect to directed light whose location varies over time is provided. The tracker includes receive optics, a polarization element, optical modulator, imaging element, and controller. The receive optics receives an impact location of the directed light as received light and provides the received light for the polarization element. The polarization element makes the received light polarized in the same direction and provides the correspondingly polarized light for the optical modulator. The optical modulator changes the polarization of the polarized light over a controlled period and provides the correspondingly polarization-changed light for the imaging element. The imaging element spatially resolves the corresponding polarization intensities of the respective polarization directions of the polarization-changed light and provides the polarization intensities for the controller.

Abstract: A tester for testing an optical sensor is provided. Said tester comprises an optical input configured to receive an optical signal from the optical sensor, an optical modification unit configured to optically modify and/or delay the optical signal to form a modified and/or delayed optical signal, and an optical output configured to transmit the modified and/or delayed optical signal to the optical sensor. In this context, the optical signal is modified and/or delayed according to a certain number of times to form the modified and/or delayed optical signal.

Abstract: A laser pulse amplifier device (100) includes an amplifying cavity (10) comprising an amplifying laser gain medium (11) and multiple cavity mirrors (12.1 to 12.7) spanning a cavity light path (13), wherein the amplifying cavity (10) is configured for an amplification of laser pulses (1) circulating along the cavity light path, and a multi-pass amplifier (20) being optically coupled with the amplifying cavity (10) and comprising multiple deflection mirrors (22) spanning a multipass light path (23), wherein the multi-pass amplifier (20) is configured for a post-amplification of laser pulses (2) coupled out of the amplifying cavity (10), wherein the amplifying cavity (10) and the multi-pass amplifier (20) are arranged such that the laser gain medium (11) of the amplifying cavity (10) is included as an active medium in the multi-pass light path (23) of the multi-pass amplifier (20). Furthermore, a method of amplifying laser pulses is described.

Abstract: A laser pulse amplifier device (100) includes an amplifying cavity (10) comprising an amplifying laser gain medium (11) and multiple cavity mirrors (12.1 to 12.7) spanning a cavity light path (13), wherein the amplifying cavity (10) is configured for an amplification of laser pulses (1) circulating along the cavity light path, and a multi-pass amplifier (20) being optically coupled with the amplifying cavity (10) and comprising multiple deflection mirrors (22) spanning a multipass light path (23), wherein the multi-pass amplifier (20) is configured for a post-amplification of laser pulses (2) coupled out of the amplifying cavity (10), wherein the amplifying cavity (10) and the multi-pass amplifier (20) are arranged such that the laser gain medium (11) of the amplifying cavity (10) is included as an active medium in the multi-pass light path (23) of the multi-pass amplifier (20). Furthermore, a method of amplifying laser pulses is described.