Hate to be pedantic, but you have a ND:YAG rod there. I can tell from the purple color which changes with angle and lighting. Ruby rangefinder rods are very dark red. I've spent much of my life working with ND:YAG and RUBY Lasers.
It will most likely lase at 1064 nanometers unless it has a OPO wavelength converter to 1.54 microns. I don't have time to view the whole video right now as I'm at work.
The AXI modules most likely come from Analog Modules inc.
WARNING!
YOU HAVE A CLASS IV LASER! DANGER! DO NOT DIRECTLY VIEW THE IR LIGHT OR ITS DIFFUSE OR SPECULAR REFLECTIONS!
The Rangefinder Laser is Q-Switched to enhance its peak pulse power, you have a 10-20 Nanosecond pulse of immensely intense light,
You MUST HAVE Optical Density 6 or greater safety goggles at 1064 nm to work at this wavelength, even the diffuse pulse reflected from nearby objects is a SEVERE EYE HAZARD!
Avoid Chinese Made EBAY Goggles for this task, you need certified OD6 or greater eye protection. Otherwise the beam path must be totally enclosed by metal. Your NOMINAL OPTICAL HAZARD ZONE for a unit like that if even close to having a collimated beam can be hundreds of meters or more.
So you understand what you have, find the SSY-1 at Sam's Laser FAQ. A typical pulse shaping series inductor would be about ~1000=2000 uH for a small Xenon flashlamp used in a Rangefinder.
Steve