Solid state laser apparatus

A solid state laser apparatus comprising:

• a cavity with a longitudinal hollow having opposite open ends;
• a cylindrical solid state excitation medium accommodated in the longitudinal hollow of the cavity;
• a solid-state-excitation-medium holder in a form of a hollow cylinder inserted into each of the opposite open ends of the longitudinal hollow and fitted over a corresponding end of the solid state excitation medium;
• seal means for fitting into a hollow of the solid-state-excitation-medium holder adjacent to a portion of the holder fitted over the end of the solid state excitation medium, the seal means including:
• seal body means free of degassing and hydrolysis for fitting over an outer periphery of the end of the solid state excitation medium for gripping the solid state excitation medium;
• and
• pressure means for fitting in a groove of the seal body means for circumferentially surrounding a gripped portion of the solid state excitation medium.

A seal for use in a solid state laser apparatus including a cavity with a longitudinal hollow having opposite open ends, a cylindrical solid state excitation medium accommodated in the longitudinal hollow of the cavity, and a solid-state-excitation-medium holder in a form of a hollow cylinder inserted into each of the opposite open ends of the longitudinal hollow and fitted over a corresponding end of the solid state excitation medium, the seal comprising:

• a seal fitted into a hollow of the solid-state-excitation-medium holder adjacent to a portion of the holder fitted over the end of the solid state excitation medium, the seal including:
• an annular seal body with a U-shaped section, made from a resin free of degassing and hydrolysis, and fitted over an outer periphery of the end of the solid state excitation medium to grip the solid state excitation medium;
• and
• spring fitted in a groove of the annular seal body provided by the U-shaped section so as to circumferentially surround a gripped portion of the solid state excitation medium.

Seal means for use in a solid state laser apparatus including a cavity with a longitudinal hollow having opposite open ends, a cylindrical solid state excitation medium accommodated in the longitudinal hollow of the cavity, and a solid-state-excitation-medium holder in a form of a hollow cylinder inserted into each of the opposite open ends of the longitudinal hollow and fitted over a corresponding end of the solid state excitation medium,

• said seal means for fitting into a hollow of the solid-state-excitation-medium holder adjacent to a portion of the holder fitted over the end of the solid state excitation medium, said seal means including:
• seal body means free of degassing and hydrolysis and for fitting over an outer periphery of the end of the solid state excitation medium to grip the solid state excitation medium;
• and
• pressure means for fitting in a groove of the seal body means for circumferentially surrounding a gripped portion of the solid state excitation medium.