[Andrés]

I've been searching for a little info on lasers and bLasters.
The autobLaster just seems to be just a primitive Version of modern lasers.

from The Completely Unofficial Star Wars Encyclopedia

AutobLaster
this ancient weapon was the fore-runner to the bLaster cannon. Like modern bLasters, it produced a high-intensity packet of coherent light which could be shot into a target. Unlike modern weapons, the autobLaster simply let fly with a salvo of bolts that were hard to aim and of relatively low power. (SH)

BLaster
common name given to any hand-held laser weapon. They come in all shapes and sizes, from small holdout weapons to heavy repeating rifles. They most often employ a small power pack consisting of a ionized cryogenic cells. The power packs generate coherent packets of light, much like a ship-mounted laser. They can be set to various power outputs, from stun to vaporation. (SW, SWSB)

Laser
a device which uses a photonic beam generator to combine coherent energy into packets that can be aimed at a target. Upon striking the target, the packets split the target's molecular structure to varying degrees, based on the strength of the packets emitted. The packets can be generated to lightly stun a target or completely vaporize it. (SWSB)

and from The Star Wars Sourcebook, 2nd edition - West End Games

The terms "laser" and "bLaster" are synonymous, except that "bLaster" usually implies a smaller, lighter weapon. Ship mounted lasers and weapons vary greatly in power.

I'm not fully convinced that bLasters and lasers should come from different techs.

But I found another "obsolete" weapon that could be used instead.
If "pulse energy weapons" give "pulse-waves" we'd have a name coincidence like with torps and missiles.
It's curious that something that sounds more advanced like spatial distortions was actually becoming obsolete during the TOTJ era by the mundane "lasers", and that by the times of the movies was probably considered as primitive as slugthrowers.

from Tales of the Jedi Companion - West End Games

The two main types of energy weapons used throughout the galaxy rely on either pulse-waves or lasers. Pulse-wave weapons fire spherical spatial distortions that disperse as they as they are propelled forward.

and from the CUSWE

Pulse-wave BLaster
an ancient weapon, used before energy weapons were commonplace, pulse-wave bLaster created a spatial distortion when fired. This caused severe damage to solid matter, as the wave altered atomic make-up. The wave dissipated as it moved away from the weapon. (E)

Pulse-wave Induction Spine
this ancient weapon resembled a modern bow, but produced a wave of energy when pulled and released. The ancient Krath used these weapons on their war droids, during the attack on the Jedi convocation on Deneba. (EGD)

Pulse-wave Rifle
an ancient weapon, used before energy weapons were commonplace, pulse-wave rifle created a spatial distortion when fired. This caused severe damage to solid matter, as the wave altered atomic make-up. The wave dissipated as it moved away from the weapon. (TOJC)