Mitsubishi 638nm 300mW laser diode melting CD case

[Blord]

This is my newest laserdiode. It is the Mitsubishi 638nm 300mW laser diode.
With a 405-G-2 lens and 965mA current it burn thought the case in few seconds.

Mitsubishi 638nm laser diode with 405-G-2 lens

The 445nm hotlight is set at 1350mA.

Dot comparison 638nm vs 445nm diode at 10 meter.

 

[ARG]

What did you run the 638nm diode at?

 

[Blord]

The 638nm diode was run at 965mA. According to the review it was close to the maximum output.

 

[hakzaw1]

not all glasses will protect ypur eyes on these--look here to see a possible GB for ones that do. PM me here if you want a pair- substantually cheaper than a seeing eye dog.

Good quality EYEWARE for the new 635 diodes possible GB

 

[Ghostchrome]

965mA??! woah

 

[Seoul_lasers]

The 638nm diode was run at 965mA. According to the review it was close to the maximum output.

That is quite a bit of current consumption for a red diode!
However upon further reading it's a multimode diode. This makes a huge difference!
Peak output is just shy of 500mW at 1A !

 

[Blord]

I already got a glass for 445nm color but I am looking for a 635-650nm glass. This 638nm is bright, a glass is much needed.

500mW at 1A is done with a normal Aixiz glass. According to DTR a G1/G2 glass add another 30% increase in power. The power is close to 650mW of red power.