Recent content by mecheng2011

  1. M

    Undergrad Ionization of Air with a Laser

    Yes it is coming to a focus, with an intensity of around 5MW/cm^2. Looks like I have found a great journal on this topic, and I will post a link below for anyone who stumbles upon this in future! http://www.dtic.mil/cgi-bin/GetTRDoc?Location=U2&doc=GetTRDoc.pdf&AD=ADA133211 Looks like...
  2. M

    Undergrad Ionization of Air with a Laser

    Thanks for your help. 1.The reason is that there will be a camera looking inside the tool, and if there is ionisation this will flare the camera image. 2.Yes, I am only trying to prove that under my conditions it will not occur. If it will occur, then I will have to design the enclosure...
  3. M

    Air velocity from small aperture

    Out of curiosity, may I ask why you have chosen to use this kind of approach? I am wondering what the benefit would be of using a air blaster rather than the simple scraper!
  4. M

    Undergrad Ionization of Air with a Laser

    Hi guys, I am currently doing a project which involves firing a class 4 laser into a small enclosure (200mmx200mm) and onto a target, which is to emit IR. I am trying to theoretically prove that there will be no ionization of the air (i.e. turn the air into plasma) inside the enclosure...
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    Laser Output Modeling for Silicon Carbide Tile

    Thanks. I was just getting confused as I am trying to model a single pulse, and I felt that maybe it should be somewhat higher as this is a Class 4 laser. It is for a dissertation, I am basically designing a tool to convert non-visible light from Class 4 lasers (of the specification I wrote...
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    Laser Output Modeling for Silicon Carbide Tile

    Hi guys, I'm new to the forum, I'm a mechanical engineer but running a project a little outside my comfort zone which is to do with optics. I am trying to calculate the power density of a pulsed Nd:YAG laser but am getting in a muddle with the Average and Peak powers. The project is to model...