Where to get some cheap dichros?

• Feb 18, 2008

• #1

M

meekaah

0

Joined

Feb 15, 2008

Messages

8

Points

0

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

 

• Feb 18, 2008

• #2

T

toked323

0

Joined

Sep 1, 2007

Messages

1,591

Points

0

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

 

• Feb 18, 2008

• #3

M

meekaah

0

Joined

Feb 15, 2008

Messages

8

Points

0

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

 

• Feb 19, 2008

• #4

K

kake

0

Joined

Dec 6, 2007

Messages

71

Points

0

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?

 

• Feb 19, 2008

• #5

K

kake

0

Joined

Dec 6, 2007

Messages

71

Points

0

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

 

• Feb 20, 2008

• #6

L

likewhat

Guest

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.