Hi guys, I'm very new to this forum and very new to Laser building.
I did my first ''laser'' yesterday but I have problem with Collimation.
it is 405nm from PHR-803T sled
Basically, right now I have self-made driver (as per Laser driver - It can be done) which is connected to the diode in Aixiz casing and I tried using 6V and 9V batteries (9V is much brigter) but I get huge divergence of the beam once it goes past 4-5meters. I tried focusing the lens but to no avail... it looks like a nice dot (snowflake) from 1-4 metres away but then just expands enormously.... I pointed it at the wall which is about 20m away and the ''dot'' get so big (1m probaly in diamater) that you can barely see it.
Any Idea what is the problem?
oh yeah the beam is not visible in
the dark unless i smoke directly into it but it's very bright for the eye from 4m away.
Also: the operating current is 110mA +-5 but when i point it at my black leather wallet it doesnt burn or anything like that (wallet is about 5cm away from it).
I did my first ''laser'' yesterday but I have problem with Collimation.
it is 405nm from PHR-803T sled
Basically, right now I have self-made driver (as per Laser driver - It can be done) which is connected to the diode in Aixiz casing and I tried using 6V and 9V batteries (9V is much brigter) but I get huge divergence of the beam once it goes past 4-5meters. I tried focusing the lens but to no avail... it looks like a nice dot (snowflake) from 1-4 metres away but then just expands enormously.... I pointed it at the wall which is about 20m away and the ''dot'' get so big (1m probaly in diamater) that you can barely see it.
Any Idea what is the problem?
oh yeah the beam is not visible in
the dark unless i smoke directly into it but it's very bright for the eye from 4m away.
Also: the operating current is 110mA +-5 but when i point it at my black leather wallet it doesnt burn or anything like that (wallet is about 5cm away from it).