638 or 650nm Whats more popular?

[paul1598419]

Sorry to hear that, Richie. I don't allow the diodes to be exposed to the air for more time than is necessary. I have yet to lose one of the Mitsubishi's.

 

[xenon4454]

638 nm is more visible, more popular than 650nm. I would buy 638nm one to see bright beam. 650nm is common, the cheapest color of laser pointer and just dim like 405nm.

 

[Girix]

If you want a powerful 638nm red laser I'd stick to the Mits ML501P73 as they hold up better than the others we've had. That diode can be pushed over 1 watt, but the Ushio, not so much.

How much can be pushed in terms of current to ushio, and what optical power?

 

[Lifetime17]

Hi Folks,
The Mitsu 500 is a work horse and a 638nm diode , For an open can diode and for the price can do 1W+ easy. They last ...
Rich

 

[paul1598419]

How much can be pushed in terms of current to ushio, and what optical power?

Can't really say as the only two Ushio diodes I had both failed as I was trying for at least one watt. That was back when they first became available to us. The Mitsubishi is by far the better choice and I haven't really heard of anyone in quite sometime who bought one of those Ushio diodes. They have no advantage at all over the Mits.