Solid-state laser device and photoacoustic measurement device

A solid-state laser device comprising:

• a laser rod;
• an excitation lamp which emits excitation light to the laser rod;
• a laser chamber which includes a frame body having an internal space storing the laser rod and the excitation lamp and transmits light emitted from the excitation lamp to the laser rod inside the frame body, a first portion of the frame body storing the excitation lamp having a first hole portion having a diameter greater than the outer diameter of the excitation lamp and a second portion of the frame body storing the laser rod having a second hole portion into which the laser rod is inserted;
• a pair of mirrors provided on the optical path of a light beam emitted from the laser rod;
• a housing to which the laser chamber and the pair of mirrors are directly attached;
• and
• a shielding portion which shields the second portion of the frame body of the laser chamber attached to the housing, the pair of mirrors, and the optical path of the light beam emitted from the laser rod from the outside,
• wherein the first portion of the frame body of the laser chamber further has an O ring attachment portion in which an O ring having an outer diameter greater than the diameter of the first hole portion is attached to an end portion in a longitudinal direction, the excitation lamp is able to be removed from and inserted into the laser chamber intermediated by the first hole portion, and the thickness of at least a part of a region of the shielding portion covering the optical path of the light beam emitted from the second hole portion is smaller than the thickness of other portions of the shielding portion on the outside in the longitudinal direction from the first portion of the frame body of the laser chamber.