Where to get some cheap dichros?

[meekaah]

Well everything's in the title, where can i buy some cheap dichros? i would only need one for the moment as i only have red and green but if i can get another one for the blue when i can afford it ;D

Any links , recomendations..?
Thanks

 

[toked323]

i think i heard you can get some out of old laser disc players, theres also a hene laser in there i think

 

[meekaah]

and if i wished to buy some where would i go?

 

[kake]

Just a question about HeNe's.. If i got a HeNe from a old laserdisc, what could i use it for? would i need to make a driver? wouldn't it be weak? What would make me prefer it over other red lasers?

 

[kake]

Great beam specs in a way that the dot of a 1mW HeNe would be visible even longer away than a 100mW diode laser?

 

[likewhat]

Since HeNe lasers have a cavity the beam will be significantly more TEM00 than diode lasers that just emit from a rectangular hole. As for how far away you can see something that depends solely on the power of the laser and spot size at the distance in question.