Abstract: A solid-state laser apparatus 1 bounces laser light L2 between an end mirror 3 and an output mirror 4 via a slab-type solid-state laser medium 2 excited by excitation light L1 to thereby amplify and output the laser light L2. The solid-state laser medium 2 includes incident/exit end faces 2a, 2b on and from which the laser light L2 is made incident and exits, and reflecting end faces 2c, 2d which reflect the laser light L2 so that the incident laser light L2 propagates in a zigzag manner. The incident/exit end face 2a is made incident with the excitation light L1 so that the excitation light L1 propagates along substantially the same propagation path as that of the laser light L2 within the solid-state laser medium 2. Accordingly, a solid-state laser apparatus which can improve the coupling efficiency between the excitation light and the laser light is realized.

Abstract: The present invention relates to a solid-state laser module, and so on, having a structure for enabling optical output of high quality to be obtained. The solid-state laser module includes a vacuum container with windows, and a heat sink, a solid-state laser medium, and a pair of transparent members are housed in the vacuum container in an integrally assembled state. The solid-state laser medium and the pair of transparent members respectively have disk shapes, and the pair of transparent members sandwich the solid-state laser medium. The thermal conductivity of each of the pair of transparent members is higher than the thermal conductivity of the solid-state laser medium.

Abstract: A solid laser module etc. having a structure that enables to obtain a high-quality light output. The solid laser module has a vacuum container with a window, and a heat sink, a solid laser medium, and a pair of transparent members are received in an integrally assembled state in the container. The solid laser medium and the pair of transparent members are each formed in a disc shape, and the solid laser medium is sandwiched between the pair of transparent members. The thermal conductivity of each of the pair of transparent members is higher than the thermal conductivity of the solid laser medium. The heat sink is shaped to simultaneously hold portions of the pair of transparent members that hold the solid laser medium in between. A heat insulation region having a lower thermal conductivity than the solid laser medium is provided between the heat sink and the solid laser medium.

Abstract: A toilet seat apparatus includes a base portion adapted to be fixed on a toilet bowl, a main body portion detachably mounted on the base portion, a toilet seat rotatably supported by the main body portion, a guide groove formed at the base portion and extending in a backward and forward direction of the toilet bowl and having an opening portion at a front side thereof, and a pin provided at the main body portion, the pin being inserted into the guide groove for allowing the main body portion to slide relative to the base portion, rise from the base portion, and to detach from the base portion.