Could you use a 6MW chemical laser for Inertial Confinment Fusion?

Something I’ve been puzzling over, for a movie review, hampered by the fact that I’m a sub-rank amateur when it comes to laser physics—could you use a 6MW chemical laser (or more than one) for Inertial Confinement Fusion, possibly even to achieve “ignition”?

I know that, for example, the National Ignition Facility uses a laser of comparable energy, but much higher power—500 Terawatts, in picosecond pulses. Unlike the lower-powered continuous wave fictional chemical laser above.

Like, I’m a sub-novice on the subject, with just a crash course in casual study on the subject…all I can dig up was that a Hydrogen-Fluoride Laser fusion project has been proposed by at least one physicist—one convicted of attempted nuclear espionage, who’s been described as “a nut.” Joy—and pick out a few technical “nits” in the laser depicted in the film. (The laser’s “fuel” is probably impossible; the quoted wavelength is wrong for what we actually see onscreen; the laser somehow miraculously didn’t require any sort of cooling system to keep from incinerating itself, the places where it was installed, or it’s operators; the quoted range might be a tad optimistic…etc.)

So, I ask you, those of you with finer minds than I…could you use reasonably the fictional laser as described—or something that could be logically developed from it—for nuclear fusion research, or even fusion power generation? Aside from just building a hundred million of them to match the power of the NIF laser?

Or, failing that, are there any other “peaceful” applications that immediately come to mind for such a device? There are more than a few proposals for laser spacecraft propulsion, but I’m certainly curious about anything else, even outside the traditional “flambéing people at a comfortable distance” tack.

Chemical lasers are designed to produce a lot of energy, enough energy to be useful as a weapon. They deliver this energy over a relatively long period of time. Confinement lasers need to deliver their energy in a very short period of time, in order to usefully be able to control the geometry of the confinement with enough precision that you get the densities needed. The energy per unit time is insane.

A nano-second is one foot. A pico-second is 1/1000th of a foot, or 0.03mm. A pico-second laser delivers light in thin pancakes with a silly energy density. To do this requires extraordinary optical tolerances, and specialised lasing mechanisms. A chemical laser is a big brutal device and delivers energy like a firehose. There is no way it could be used for confinement.

Inertial confinement is a lot like building a Fat-Man atomic bomb. You need to collapse a shell of material with enough precision and speed that it has the density needed to yield a useful amount of energy from the nuclear reaction. The actual reaction is different, but getting there is much the same. Trying inertial confinement with a chemical laser would be like trying to build a Fat-Man by piling lots of sticks of dynamite on top of a lump of plutonium. All you would get is a messy splatter.

Also, remember, the issue is not fusion. We’ve been achieving fusion in the lab for decades in several ways. It just takes a LOT of energy. The issue is commercially useable fusion, recovering close to as much or more power that used to trigger fusion. If you managed to fuse a few atoms of hydrogen, so what? the point would be, can you fuse the majority of a fuel pellet?

From what Francis is saying - no.