Seeded Dye Laser,

uses Glow as the Medium (similar to a laser dye) sometimes takes a while to get going, since i made the seed laser very small

BMTL as the partially reflective, (bmetl reflects 50% of photons, allowing the other 50% to pass) but still works ok since glows amplification is off the charts,

Glow works a amp medium and when a glow particle procs its photon release its life goes to around 100, dropping to 0 again (over around 5 seconds) before it can do the same, so a flowing stream of glow gives far more output than a closed capsule (and portals reset the life anyway i think)

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edit1: added fast-stop LCD, tightened up some bits, added more detail to post

might add some sort of qswitch with a selector between CW (BMETL Reflector) or QS Pulse (ewall),
also a more powerful PCLN Seed Laser that only comes on for a few seconds at the startup,

Updated it quite a bit,

now uses wifi and has a pair of Q-switches one to lockout the laser (prevents all lasing by dumping the photons into void) and the other to be used to get big bursts (bypasses the normal Output Coupler)

also a crappy control panel til i get one made up

uses a short pulse for the Seeding Laser instead of a tiny constant one, so its easier to modelock manually