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[hwang21]

Re: Professional Melles Griot Beam Expander 20X

What wavelengths are the optics AR coated for?

 

[DJNY]

Re: Professional Melles Griot Beam Expander 20X

From the manufacturer page:

Coating: 415–700 nm

 

[ultimatekaiser]

Re: Professional Melles Griot Beam Expander 20X

Wow wish I could afford it. Would go great with the HeNes...

 

[DJNY]

Re: Professional Melles Griot Beam Expander 20X

Wow wish I could afford it. Would go great with the HeNes...

or with the Herc :shhh:

 

[ultimatekaiser]

Re: Professional Melles Griot Beam Expander 20X

or with the Herc :shhh:

Oh yes....

 

[DJNY]

Re: Professional Melles Griot Beam Expander 20X

Will be away for one week in about 6 hours.

If this hasn´t sold within the next 5 hours (I would also ship it within this time), people would have to wait till next week!

Any more questions? Feel free to ask.

 

[DJNY]

Re: Professional Melles Griot Beam Expander 20X

2h left before my vacation

So I can ship this out within the next 2 hours after payment

 

[IsaacT]

Re: Professional Melles Griot Beam Expander 20X

I just worry about a few things that make me wonder if it would be a good decision for me personally.

1. The laser I want to use it with is my PGL-III-C 800mW 532nm....beam size and power seem unfitting for this unit, no?
2. Fitting it to the laser...

 

[DJNY]

Re: Professional Melles Griot Beam Expander 20X

Unfitting for 532nm? Not really.

I tested it with my former RPL-500 532nm and results were pretty awesome.
Was able to light a match 50ft away for example.

The laser just has to have a good beam diameter, not >3.0mRad like most of these cheap high powered greenies have. Otherwise there is going to be a significant loss in power.

Ehgemus used to make mounts for a Melles Griot expander. Some of the other machinist on the forum should be able to do it as well.