Are lasers capable of producing explosions ,or is that just fictional filler?

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SUMMARY

Lasers can produce explosions under specific conditions, particularly in applications like inertial confinement fusion, where high-energy laser beams induce thermonuclear reactions in deuterium and tritium pellets. The concept of using lasers to create explosions is grounded in the physics of high energy density and the ability to vaporize materials rapidly, leading to explosive reactions. Research into pulsed laser projectiles demonstrates that lasers can generate plasma and subsequent explosions, although typical low-power lasers, such as pocket laser pointers, do not possess this capability. High-power lasers, like the 30W models used in industrial applications, can cause significant thermal effects but are not efficient for explosive outcomes.

PREREQUISITES
  • Understanding of inertial confinement fusion principles
  • Knowledge of high-energy laser technology, specifically Coherent 30W laser systems
  • Familiarity with plasma physics and its applications in laser weaponry
  • Basic concepts of thermonuclear reactions involving deuterium and tritium
NEXT STEPS
  • Research the principles of inertial confinement fusion and its applications
  • Explore the technology behind pulsed laser projectiles and their mechanisms
  • Study the effects of high-energy lasers on various materials, including vaporization and thermal dynamics
  • Investigate the role of lasers in military applications and their potential for creating explosive reactions
USEFUL FOR

Scientists, engineers, and military personnel interested in laser technology, explosive physics, and applications in both industrial and defense sectors will benefit from this discussion.

promeus
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Please read this carefully before answering,in fiction lasers are quite common and they seem to have the property to produce explosions.I am not asking if they exist,I am asking if with the right technology can laser beams produce explosions.Is this just some myth or is there some truth to photons being able to produce explosions?
 
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In inertial confinement reactors, they shoot lasers at a pellet of deuterium and tritium to create a miniature thermonuclear explosion.
 
It's not necessarily a "property of lasers," it's more about the consequences of high energy density. If you fire a laser with enough energy at some matter, it could cause nuclear fission, which would liberate a huge amount of energy from the matter, causing an explosion.
 
IIRC an area of research in laser weaponry is looking into creating lasers that ablate a layer on the surface of the target creating a plasma that expands rapidly; essentially creating an explosion. I think it's called pulsed laser projectile or something like that.
 
Has medical uses but does this really count as an "explosion"?...

http://www.webmd.com/healthy-beauty/laser-resurfacing-surgical

Laser resurfacing uses a laser to send out brief pulses of high-energy light that are absorbed by water and substances in the skin called chromophores. The light is changed into heat energy, and the heat then destroys (vaporizes) thin sections of skin, layer by layer.
 
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Absolutely. If you suddenly overheat a small area, it will explode. You'd need an extremely powerful laser, but if you are using it as a weapon, it'd have to be that powerful. It'd probably be pretty different than you see in the sci-fi movies, but the concept itself is solid.
 
Lasers are used sometimes in fluid mechanics research to generate small explosions for use as disturbances in wind tunnels.
 
promeus said:
Please read this carefully before answering,in fiction lasers are quite common and they seem to have the property to produce explosions.
If you think about typical movies scenes: For those explosions, you usually need some explosives in the target (hydrocarbons can be fine, too) - if you can heat that with lasers, it might explode.
 
The title to this thread is a bit to general. SOME lasers are capable of producing explosions. Your run of the mill pocket laser pointer puts out a few milliWatts and will never cause anything to explode.

I used to work with a http://www.coherent.com/downloads/AVIA532-30_DSrevB_1.pdf laser, which produced a 3OW green beam. As produced its 3mm diameter beam could flame paper or cause a bad skin burn instantly. Focused to a 30um spot it vaporized Silicone. I never saw an explosion of any kind.

I talked with an ex AirForce tech who claimed to have seen a 50cm wide path of glass fused from desert sand caused by their laser.

The 30W laser I worked with consisted of a 55lb box of power supply and control electronics and a 110lb box with the laser head and water cooling plumbing. The laser that supposedly burned a glass path in the sand was contained in and powered by a C130 aircraft. In other words it was huge. Lasers are not a real effient devices the Coherent consumed several hundred watts to produce the 30W beam. High power laser beams do not come easy or cheap.

Explosions are not the normal result of a laser, as witnessed by the laser on Curiosity which is capable of delivering very high energy but short term pulses. One could say that the spots left behind by Cursioitys laser are the result of a small explosion, how big of an explsion did you want? A megaWatt for a few milliseconds is able to vaporize (explode?) a small bit of most any rock.
 
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I'm sure that it depends on what the laser is hitting. Also, I believe that the light could be converted into kinetic energy upon contact, in certain circumstances, which would cause an explosion.
 

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