5mW* 445nm pointer from laserlands

[Cyparagon]

This is the item in question. They're $70 shipped, but I've heard there are some floating around for slightly less.
Shipping took two weeks and it came with no warning label. Important parts are in bold.
Is it slightly longer than a typical violet NewWish style pointer (violet on top):

The dot IS indeed a beautiful single mode :

The ring pattern is just spherical aberration from the expanding lens I used. The dot is about 4mmx2.5mm and has a divergence of 0.8mRad. It has no fast axis like the ©ã§ËØ blue diodes.

Equipment used: Science-Surplus spectrometer, Gentec 10W power meter, and a Mastech bench power supply. I didn't bother with pictures of the readouts, so you'll just have to take my word for it :

Wavelength is 449nm and warms up to 450nm after a minute or so.
Power peaked at 45mW and settled down to a very stable 43mW
Current draw at 3.4V, 3.0V, and 2.4V was 180mA, 200mA, and 300mA respectively.
Below 2.4V, current shoots up to ~400mA, but output drops to 3mW. This is probably bad for the driver, so if you see it dim, turn it off.

Summary: It's everything they say it is, and more!

 

[Kalahari]

Nice review. I was thinking about getting one of these for myself. I just never thought they were legit.

 

[eytyxhs]

Great review man! :beer:!

Beamshots!?

 

[aryntha]

Hmm. Very nice. Can you see a visible wavelength difference from 445? Or are they too close to see a visible difference...

 

[Ash]

How would this be as a presentation pointer?
Is 50mW of 449nm dim enough to use in a conference room on a whiteboard?

 

[yobresal]

Nice, I would love to see 10X more photos in this thread.

 

[offroadfreak8582]

sorry if this question is stupid lol

but would you buy a 50mW 445nM ? Unless you plan on using it on powerpoints?

 

[midias]

sorry if this question is stupid lol

but would you buy a 50mW 445nM ? Unless you plan on using it on powerpoints?

Probably because high power 445 are multimode

 

[offroadfreak8582]

Probably because high power 445 are multimode

yeah so you have better beam but, what is the practical use of that? Never really looked into single mode :angel:

 

[midias]

yeah so you have better beam but, what is the practical use of that? Never really looked into single mode :angel:

Whats the practical use of a 1W 445? Some people want good beam specs and to have an actual laser pointer with good divergence. Blue gives better visibility than red and more durability than green.

 

[offroadfreak8582]

:shhh:

Whats the practical use of a 1W 445? Some people want good beam specs and to have an actual laser pointer with good divergence.

ehm for example:

- heating chemicals that may not be exposed to fire

But what you said makes sence too, for me a laser can't be strong enough :shhh:

What is the maximum output for singled mode diodes on the market today?

greetings,,

 

[rangedunits]

Never heard of caseo diodes.

 

[Blord]

Great news, I want this new wavelength for my rainbow. And it is single-mode too for a beautiful dot.

Next question is where to buy bare diodes for a DIY build.

 

[foulmist]

Never heard of caseo diodes.

he was referring to the N!ch!a's 445nm diodes and wrote that with symbols cuz we don't want c*As*!() to know what we are doing with their projectors

 

[midias]

Great news, I want this new wavelength for my rainbow. And it is single-mode too for a beautiful dot.

Next question is where to buy bare diodes for a DIY build.

O like had them. But I think they are all 3.8mm

 

[Blord]

The 50mW 450nm laser has 1.28x brighter dot than 50mW 445nm laser. That is cool !

Dot: (450nm 50mw) vs. (445nm 50mw)