Abstract: A laser device includes a support, a first heat sink, a plurality of laser light sources attached to the support, and a plurality of electrodes bridged between the plurality of laser light sources and the first heat sink. Each of the plurality of laser light sources is movable with respect to the support. Each of the plurality of electrodes is electrically connected to one of the plurality of laser light sources at a first connection portion, and is thermally connected to the first heat sink at a second connection portion. In each of the plurality of electrodes, an extension part between the first connection portion and the second connection portion has flexibility, and a length of the extension part is larger than a linear distance between the first connection portion and the second connection portion.

Abstract: Disclosed is a laser medium unit that includes a laser medium and a holding body. The laser medium has a pair of end surfaces. The holding body surrounds the laser medium when viewed form a direction intersecting with the pair of end surfaces and holds the laser medium. The holding body includes a deformation allowing portion that extends from the inside to the outside of the holding body when viewed from the direction intersecting with the pair of end surfaces. The laser medium and the holding body are in contact with each other. A contact region of the holding body with the laser medium has a width in the direction intersecting with the pair of end surfaces and extends along a side surface of the laser medium when viewed from the direction intersecting with the pair of end surfaces.

Abstract: A system for testing a logic circuit having a plurality of flip-flops associated with a scanning path between scanning-in and scanning-out terminals thereof and a combination circuit including logic gates is disclosed. In the system, parallel input data is transformed to serial data by a shift register, and the serial data is set in the flip-flops, while serial output data is transformed to parallel data by the shift register. The data is then output in parallel.