[noobermin]

So, one of the things that I probably shouldn't say is the NIF design is not really optimized for fusion specifically (I won't say too much but you can guess why). There are schemes out there that can be more efficient, for example, not even bothering to convert to UV and then x-rays (start at UV in fact, or crank up the intensity of light, the light in NIF is very intense but modern high intensity systems are orders of magnitude more intense, they are however dramatically lower in pulse energy). That plus using modern laser tech when you realize NIF was designed in the 80s, we can definitely make it much more efficient eventually.

[Robotbeat]

Don’t need to be too coy about the fact that NIF was built to recreate the processes inside an H-bomb after underground nuclear testing was banned. They literally use the same concept of a “Hohlraum” (here in miniature) where heat and light (from a fission trigger in the case on an H-bomb, lasers in the case of NIF) convert to x-rays on the outer casing and evenly illuminate the fuel pellet casing which ablates a bit to drive implosion which triggers the actual compression heating of the fuel pellet. Heck, some previous tests even used a uranium tamper (because in part, uranium has high inertia due its density thus prolonging the period of high pressure), just like a real H-bomb.