500mW Diode

What diode type is Wicked using for their 500mW red model?

I want to build one.

Exerd said:

What diode type is Wicked using for their 500mW red model?

I want to build one.

Click to expand...

Based on this question and your question in the other thread(s) you need to read a bit more. This laser probably uses a DPSS module, NOT simply a red diode. Even if it used a single diode, that diode would have to be (probably) a C-mount and would required a multi-lens system to make the beam close to round.

You are trying to jump into the deep end without knowing the basics of how to swim.

Peace,
dave

Believe me, I'm using the search engine. Sometimes your knowledge base can make you feel like those under you simply aren't putting their share of effort in to find their own answers.

Typing "DPSS module" nets me a whole lot of nothing on the subject. It appears "module", as used on this site, and "DPSS module", are surely two different things. And they happen to combat one another when searching.

The definition of diode-pumped solid-state lasers states that a gain medium is pumped with a laser diode to yield the desired output wavelength.

I know you will probably ask me to read more, but through all the reading I've done, not once have I come across a red handheld that uses a pumped medium to achieve a red color. The only solid substance I have heard of being pumped to make red is ruby, and I have never witnessed that in a handheld. Every red build I have witnessed on this forum uses a diode and no pumping medium. I hope you can understand my confusion on this subject, and why I would ask about a diode being used.

Is there anyway you could start me in the right direction on red DPSS modules so that I can read about them?

Thanks

All of wickeds red lasers are diode modules. It'll be a 500mW 650nm C-mount which as Daguin says, would require many beam shaping optics to have a beam that's even close to round.

Dave, I've never heard of red laser color being achieved by DPSS process, care to enlighten us ?

Eudaimonium said:

Dave, I've never heard of red laser color being achieved by DPSS process, care to enlighten us ?

Click to expand...

DPSS 671nm , best way to get good beam specs out of a solid state red laser without using a handful of optics. Of course if you want something bright diode is the way to go.

Similar to the process used for producing green, only instead of :

808nm-1064nm-SHG-532nm

You've got :

808nm-1342nm-SHG-671nm

*SHG-Second Harmonic Generation ( Frequency doubling ).

For what we need, diode lasers are better for red laser light. Cheaper and easier to maintain. Granted they usually have a far worse beam quality than any DPSS red laser.

There are more wavelengths available from DPSS than there are from diode, bare in mind you can't have the middle part of the visible spectrum with laser diodes.

I believe DPSS red is 671nm and is generally used when you need 500mW's or more :thinking:

EDIT: Dang your fast

diachi said:

DPSS 671nm , best way to get good beam specs out of a solid state red laser without using a handful of optics. Of course if you want something bright diode is the way to go.

Similar to the process used for producing green, only instead of :

808nm-1064nm-SHG-532nm

You've got :

808nm-1342nm-SHG-671nm

*SHG-Second Harmonic Generation ( Frequency doubling ).

For what we need, diode lasers are better for red laser light. Cheaper and easier to maintain. Granted they usually have a far worse beam quality than any DPSS red laser.

There are more wavelengths available from DPSS than there are from diode, bare in mind you can't have the middle part of the visible spectrum with laser diodes.

Click to expand...

Why can't diodes be in the middle of the spectrum? I was under the impression that ~550nm greens and some blue diode are in the works (still a few years away).


Also, the WL spyder III red has a rectangular beam and bad beam specs- 4mrad, large rectangle size: 4x6mm. Is this consistent with a c-mount?

They also make 641nm DPSS red
@ossumguywill, any diode 500mW or higher will be multimode, and require a slew of optics to get a good beam

Prototype said:

They also make 641nm DPSS red
@ossumguywill, any diode 500mW or higher will be multimode, and require a slew of optics to get a good beam

Click to expand...

so is that a yes? I was just under the impression that c-mounts did not emit a round beam.

will

Yes, it is consistent with a c-mount of that power. C-mounts don't enter a round beam, as there are several emitters on one die, hence the term 'multi-mode'.

Prototype said:

Yes, it is consistent with a c-mount of that power. C-mounts don't enter a round beam, as there are several emitters on one die, hence the term 'multi-mode'.

Click to expand...

ahh, I see. I don't know much about those higher-powered diodes. Why can't anyone just make a big-ass red diode? If you can do it for IR, I don't see why not for red. There are plenty of ~1W IR modules that have good divergence and beam quality for military and robotics uses. Anyone care to explain?

will

High powered red, green, blue, yellow, fuscia, ecru, or any other color is ""POSSIBLE.""

The problem is that their first needs to be some USE for it and then the science needs to be done. Hand held "hobby" lasers are fun, but the market is NOT large enough to drive an industry.

Affordable green and blue diodes are on the way. It is just that the science is fairly early yet. Laser TV will be in your living rooms probably after I am dead.

Peace,
dave

daguin said:

High powered red, green, blue, yellow, fuscia, ecru, or any other color is ""POSSIBLE.""

The problem is that their first needs to be some USE for it and then the science needs to be done. Hand held "hobby" lasers are fun, but the market is NOT large enough to drive an industry.

Affordable green and blue diodes are on the way. It is just that the science is fairly early yet. Laser TV will be in your living rooms probably after I am dead.

Peace,
dave

Click to expand...

My guess is the military will keep a small flow of money into laser research, and so will entertainment industries. Hopefully we can get some high-powered color diodes soon.

will

ossumguywill said:

My guess is the military will keep a small flow of money into laser research, and so will entertainment industries. Hopefully we can get some high-powered color diodes soon.

will

Click to expand...

Probably, but the military doesn't have much need for visible light. Electronics and Entertainment are probably our best new sources of science.

Peace,
dave