A mixed gas (Krypton/Argon) CW laser from Coherent.

(Note the beam being broken into its component wavelengths by the prisms.)

Additional information about these lasers can be found in Chapter 4 - Lasers: Current Trends.

Total cost for HMP6 Delivered airmail to your door:
$30 (USA) (UPS ground)
$35 (Alaska, Hawaii, Canada, Mexico)
$45 (all other countries).