Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

Cheap IR laser diode?






Joined
Oct 17, 2008
Messages
47
Points
6
Although a blue photon has a higher energy than an IR one, because 1W= 1 Joule/second, any 200mW laser will give out the same amount of energy per second.

What makes the most difference when burning with different wavelengths is the colour of what you're burning. If it's the same as the laser then it's going to reflect most of the light and not burn. You might find some black things that don't burn with IR, but then some white looking things that do. In general though an 808nm will burn similar things to a red one.

Don't forget your goggles! A 200mW 808nm dot looks like a very faint red one, but it'll burn your eyes without thinking twice if you're too close.
 
Joined
Oct 24, 2008
Messages
1,057
Points
48
Cool Thanks!! ;D

What driver, voltage, and current would you recommend for a 200mw IR Laser diode?
 
Joined
Oct 17, 2008
Messages
47
Points
6
According to the datasheet on the Stonetek website, the typical operating current is 240mA (max 280mA) and voltage is 1.9V (max 2.3V).
 

Switch

0
Joined
Dec 9, 2007
Messages
3,327
Points
0
Don't forget that shorter waves can be focused a little bit better for more mW/mm[sup]2[/sup] , and basicly more burning power.So a 200mW 808nm will have a little burning deficiency compared to a 200mW bluray for example, but with totally black stuff it's not gonna be very noticeable. :p
 




Top