Nichia 460-470nm 9mm 1.4w?!

[styropyro]

I ordered one of these and I will receive it tomorrow. I missed the delivery today actually. I'm hoping to bring it into the lab and get a spectrum on it.

 

[IsaacT]

Definitely looking forward to spectro readings and possibly some output tests. How much will she handle?

 

[Atomicrox]

Are they still being sold somewhere?

 

[DTR]

Output comparison. Identical to the 9mm 445nm diodes. The small difference in shape is just from not taking the time to focus them perfectly.

Are they still being sold somewhere?

If they seem worth I will carry them. Just depends if the cost is justified.

 

[IsaacT]

Since these look the same as the 9mm's, how higher do you think they will last?

 

[Atomicrox]

If they seem worth I will carry them. Just depends if the cost is justified.

Sounds good. Maybe the one you tested was on the low WL side... Even 465nm should be very noticeably different. Let's wait for the spectro readings

 

[Marco Polo]

I hope we see more of these wavelengths in single-mode diodes, maybe in the 100 to 200mW range, and hopefully at reasonably affordable prices. Not sure what I'd do with 1.4 watts. Maybe it's time to think about putting together a high power / multimode set.

 

[rhd]

Maybe it's time to think about putting together a high power / multimode set.

First the reds need to get their act together. They were the diodes that started it all, then they full behind. For a moment, they limped back to life with the Mits multi-modes, but those are back to being the laggards in the bunch.

Think about it, we now have violet, blue, cyan, and green DIODES, that out-class the reds.

 

[Atomicrox]

Agreed. I'd really dig a 1-3W 635nm with reasonable divergence (i.e. the same as the blues and green 9mm diodes).

BTW, do you have a source for the cyan diodes? (assuming that 495nm on your sig is one of them)

 

[rhd]

BTW, do you have a source for the cyan diodes? (assuming that 495nm on your sig is one of them)

By Cyan, I'm referring to the Nichia 460-470nm.

The 495 in my sig was just one of those "lucky break" diodes. Nothing reproducible (and you'll note that it's incredibly low power).

 

[Atomicrox]

Ah, OK. My bad

 

[Jmillerdoc]

Speaking of the reds getting their act together and multi modes in general, can someone explain why we don't see something like we are seeing with the 405's, a single mode with output power greater than 1w? If they could make a 405 with a watt or more you'd think they could make a single mode red or blue as well. I would love to have something like this with as good of beam specs as my DPSS green. Of course I realize they exist in DPSS, and the reds especially are ridiculously expensive, why not a can like the 405?

 

[crazyspaz]

By Cyan, I'm referring to the Nichia 460-470nm.

The 495 in my sig was just one of those "lucky break" diodes. Nothing reproducible (and you'll note that it's incredibly low power).

yea, really stupid low power, worthless, really. You had better just send it to me...

 

[Atomicrox]

Speaking of the reds getting their act together and multi modes in general, can someone explain why we don't see something like we are seeing with the 405's, a single mode with output power greater than 1w? If they could make a 405 with a watt or more you'd think they could make a single mode red or blue as well. I would love to have something like this with as good of beam specs as my DPSS green. Of course I realize they exist in DPSS, and the reds especially are ridiculously expensive, why not a can like the 405?

Because it's "useless" - for most "real" applications it doesn't matter if they're multi-mode, and those are probably much easier/cheaper to make. 405nm needs to be single mode because it's used in blu-ray burners. Red is used in DVD but that's already old tech and no one needs them to be faster (and therefore more powerful).

I bet we'd have high power single-mode yellow diodes if we had evolved yellow-ray discs instead of blu-ray. But of course they'd suck due to the high WL/diffraction limit.

I have some hope we get decent UV single-mode diodes eventually. UV discs would probably have better data density.

 

[DTR]

Speaking of the reds getting their act together and multi modes in general, can someone explain why we don't see something like we are seeing with the 405's, a single mode with output power greater than 1w? If they could make a 405 with a watt or more you'd think they could make a single mode red or blue as well. I would love to have something like this with as good of beam specs as my DPSS green. Of course I realize they exist in DPSS, and the reds especially are ridiculously expensive, why not a can like the 405?

All this is talk is amusing. Unfortunatly our whims do not drive laser development. Follow the money. The only reason to spend tons of money to develope single mode diodes with such high powers is there is a need for them in the optical storage market which is a multi billion dollar business. We are seeing high power multimode diodes because the display based industry has a need for them. We have to shoehorn these diodes that are designed for applications other than pointers, lab lasers and light show projectors to fit our needs.

 

[rhd]

Realistically, what's driving development of 470nm multi mode diodes? They're not actually preferable to 450 for display tech - I don't think - are they?