Here is the source code for my second scene (the hologram setup)

Rohan _e_ii



global_settings {
  max_trace_level 10
  photons {
    count 20000
    autostop 0
    media 100
    jitter 0
    }

  }


camera{
  //location <0,25,30>
  //look_at <0,0,0>
  location <0,30,45>
  look_at <0,0,-20>
  //look_at <-26,6,0>
  //location <6,6,-0>
  //look_at <0,6,0>
  }

light_source{<20,30,-40> rgb<1,1,1> media_interaction off photons{reflection
off refraction off}}

// laser
light_source{
  <-26,6,0>, colour rgb<00,100,00>
  cylinder
  radius 1
  falloff 1.1
  tightness 1
  parallel
  point_at <-10,6,0>
  media_interaction on

  }

#declare lasercase =
  difference{
    box{<2,2,4> <-2,-2,-4>
      pigment{rgb<0.4,0.5,1>}
      }
    cylinder{<0,0,-2> <0,0,4.1> 1
      pigment{rgb<0.2,0.2,0.2>}
      }
    }

#declare lasercasesupport=
  box{<2,2,1> <-2,-2,-1>
    pigment{rgb<0.4,0.5,1>}
    }

#declare opticsframe =
  difference{
    box{<2,4,0.5> <-2,-4,-0.5>}
    cylinder{<0,2,0.6> <0,2,-0.6> 1.7}
    //box{<1.9,3.9,0.4> <-1.9,-0.1,-0.4>}
    }


#declare mirror =
  union{
    object{opticsframe}
    cylinder{<0,2,0.4> <0,2,-0.4> 1.6999
      pigment{rgb<0,0,0>}
      finish{
        ambient 0
        diffuse 0
        reflection 1.0
        }
      photons{
        target
        reflection on
        refraction off
        collect off
        }
      }
    }

#declare beamsplitter =
  union{
    object{opticsframe}
    cylinder{<0,2,0.4> <0,2,-0.4> 1.6999
      pigment{rgbt<0,0,0,1>}
      finish{
        ambient 0
        diffuse 0
        reflection 0.5
        }
      interior{ior 1.5}
      photons{
        target
        reflection on
        refraction on
        collect off
        }
      }
    }

#declare spreadlens1 =
  union{
    object{opticsframe}
    intersection{
      cylinder{<0,2,1> <0,2,-1> 1.71
        }// end cylinder  */
      quadric{<1,  1,  0>,
         <0,  0,  0>,
         <0,  0, -1>, 0
        inverse
        scale <3,3,1.1>
        translate<0,2,0.2>
        }
      quadric{<1,  1,  0>,
         <0,  0,  0>,
         <0,  0, -1>, 0
        inverse
        rotate<0,180,0>
        scale <3,3,1.1>
        translate<0,2,-0.2>
        }
    pigment{rgbt<1,1,1,1>}
    finish{
      ambient 0
      diffuse 0
      }
    interior{ior 1.5}
    photons{
      target
      reflection off
      refraction on
      collect off
      }

    }

  }

#declare spreadlens2 =
  union{
    object{opticsframe}
    difference{
      cylinder{<0,2,1> <0,2,-1> 1.71
        }// end cylinder
      sphere{<0,2,8.2>  8}
      sphere{<0,2,-8.2>  8}
    pigment{rgbt<1,1,1,1>}
    finish{
      ambient 0
      //diffuse 0
      }
    interior{ior 1.5}
    photons{
      target
      reflection off
      refraction on
      collect off
      }
    }

  }

#declare testblock =
  box{<8,9,1> <-8,-2,-1>
    pigment{rgb<1,1,1>}
  }

object{lasercase rotate<0,90,0> translate<-26,6,0>}
object{lasercasesupport rotate<0,90,0> translate<-28.5,2,0>}
object{lasercasesupport rotate<0,90,0> translate<-23.5,2,0>}

object{beamsplitter rotate<0,45,0> translate<0,4,0> pigment{rgb<1,0,0>}}
//object{mirror rotate<0,45,0> translate<0,4,0> pigment{rgb<1,0,0>}}
object{mirror rotate<0,-45,0> translate<0,4,-10> pigment{rgb<1,0,0>}}
object{mirror rotate<0,-45,0> translate<-30,4,-10> pigment{rgb<1,0,0>}}
object{mirror rotate<0,45,0> translate<-30,4,-40> pigment{rgb<1,0,0>}}
object{mirror rotate<0,-45,0> translate<30,4,-40> pigment{rgb<1,0,0>}}
object{mirror rotate<0,45,0> translate<30,4,0> pigment{rgb<1,0,0>}}

object{spreadlens1 rotate <0,90,0> translate <-20,4,-40>
pigment{rgb<1,0,0>}}
object{spreadlens2 rotate <0,90,0> translate <20,4,-40> pigment{rgb<1,0,0>}}

object{testblock rotate<0,-45,0> translate<-6.5,2,-41>}
object{testblock rotate<0,45,0> translate<6.5,2,-41>}

box{<50,50,50> <-50,0.0001,-50>
  hollow
  pigment{checker rgb<0.1,0.1,0.1> rgb<0.9,0.9,0.9>}
  interior{
    media{
      method 3
      scattering{2, 0.01}
      }
    }
  }

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