Abstract: A helium-cadmium laser having high reflector mirror and output coupler mirror properties which favor lasing at 353.6 nm while inhibiting lasing at 325.0 nm. The preferred characteristics of the high reflector and/or output coupler mirrors include transmission at 325.0 nm greater than 10% and transmission at 353.6 nm less than 5%.

Abstract: A process for manufacturing helium metal vapor laser tubes having an extended life characteristic. Three main areas of processing are presented which extend the life expectancy of a helium metal vapor laser tube. The first area of processing is directed to a time bake under vacuum of the tube to be used; the second is directed to the melting of the metal in an argon atmosphere; and the third area is directed to a final burn-in procedure of the helium metal vapor laser using the manufactured helium metal vapor tube.

Abstract: A laser mirror mounting device adapted to provide for the exchangeability of sets of mirrors associated with various wavelengths of operation of a multi-wavelength laser without requiring realignment of the laser after each set of mirrors is changed. A housing, attachable to a laser support apparatus, is provided and includes an adjustable internal reference surface. The mirror mounting device is adapted for positioning within the housing and includes an external reference surface for adjustment relative to the internal reference surface of the housing. The device further includes support means for supporting a mirror relative to the laser and an adjustment means for adjusting the angular relationship of the mirror relative to the external reference surface. A housing cover engages the device for maintaining the external reference surface of the device in firm contact with the internal reference surface of the housing.