Merged 445nm Pictures and Video Thread

[jbtm]

I did that once...I put a black peice of plastic fully submerged in water and it makes a ton of pops and cracks very very rapidly. Was fun when I first relised it, now its boring

 

[Byrnz93]

its happy to be back in its original host

That has to be one of the BEST labbies I have ever seen! :drool:

EDIT: Is that a custom heatsink the module is pressed in?

 

[ossumguywill]

Sweet!, You will be able to tell because the spot will be totally fuzzy and when unfocused the spot will appear to have lines and spot going through it like a TV channel that isn't coming in clearly.

With no lens, it looks like this. Toasted?

 

[kevinmassey]

I think your diodes fine that's what mine looks like without a lens.

 

[ossumguywill]

I think your diodes fine that's what mine looks like without a lens.

Good I guess I was fortunate enough not to toast it. I think this awful stock lens will keep my diode safe and allow me to actually use the laser until the new 405/445 aixiz lenses ship

 

[Byrnz93]

With no lens, it looks like this. Toasted?

To me, that looks like the normal raw output of the diode. I think what yobresal meant was that, when the lens was in the dot would look fuzzy no matter what, and when the lens was unfocused to a rather large dot, irregularities could be noticed.

 

[yobresal]

Actually you can start to see some very small vertical lines going against the horizontal mode lines. Those vertical spot/lins are what I am talking about. You have not used the laser much yet and so the affect is very minimal but if you were to continue those would grow and multiple. eventually the focused spot would look lize a blue fuzz ball.

 

[kevinmassey]

Crap one of my diodes is starting to do that, and I'm using aixiz 405 glass, and have been the whole time... What else could have caused this?

 

[ossumguywill]

Crap one of my diodes is starting to do that, and I'm using aixiz 405 glass, and have been the whole time... What else could have caused this?

Huh... do you think the black plastic is melting? Does the aixiz glass even use plastic?

 

[kevinmassey]

No plastic on the diode side, and no signs of melting anywhere. I examined the diode magnified, and couldn't see anything on the window.

 

[ossumguywill]

No plastic on the diode side, and no signs of melting anywhere. I examined the diode magnified, and couldn't see anything on the window.

Perhaps the vertical lines are a failure mode, made worse by the acrylic. In fact I don't see why plastic on the lens would make vertical lines.... By any chance, is the one that's failing the one run at 875mA?

 

[kevinmassey]

No, it's the weak one. I'm uploading pics now. It seems to have degraded by 20+mw already .

 

[ossumguywill]

No, it's the weak one. I'm uploading pics now. It seems to have degraded by 20+mw already .

You know what this means. WE MUST DRIVE THESE DIODES AT HIGH POWERS TO AVOID FAILURE! :crackup:

 

[kevinmassey]

Here's the normal output of the higher power one.

Here's the degraded one.

Sad day I'll probably have to replace it soon.

 

[ossumguywill]

It looks to me like there's grease or something on the window... I have a red that looked like that and I just took a paper towel and rubbed the window a bit, and it cleared up. Hopefully it's just something similar and not indicative of failure.

Edit: you can't see from my picture, but mine has very faint vertical lines as well. No curling or anything, but there is more vertical striping than in your first picture.

 

[SpyderFire]

That looks like crap on the diode window, run a dry qtip aaccros it twice.. then look at the output, if it changes , its on the diode window.