Red or Red which to choose

**LaNeK779** · 03-23-2013, 05:04

you forgot 671nm

and 639nm (opsl...)

(sorry, couldn't resist,too)

**Stiffler** · 03-23-2013, 07:52

14 different reds???? Cheese and rice!!

**bridge** · 03-24-2013, 05:49

1W 658nm, ~6mm, <4mrad
500mW 635nm, ~6mm, <4mrad
300mW 637nm, 3mm, ~1mrad (2pcs Opnext 170mW combine to one)
I thought you know which one is your best choose.

**iczerjones** · 03-29-2013, 11:55

Originally Posted by pschlosser

There are at least 6 wavelengths, and of those, there is variation in diode packaging and manufacturer.

Some wavelengths that come to mind are:

632.8 (sorry, couldn't resist)
635
637
638
639 (OPSL)
640
642
647 (sorry, there it is, again)
650
655
660
671 (DPSS)

Some sizes:
C-Mount
5.6mm

Ha! 632.8nm was absolute fire compared to other wavelengths on my old 15mW HeNe!! Absolutely loved that thing. (back before these diodes started spewing forth coherent torrents) The beam profile was absolutely gorgeous as well.

(sorry, slightly off topic)

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**andy_con** · 03-29-2013, 14:43

just to correct some info in this thread, 660 does not = big fat beam. the 5.6mm 660nm diodes are single mode so mega tight beam

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