900mW of 445nm VS 1Watt of 473nm

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05-31-2010, 07:00
rfourt

900mW of 445nm VS 1Watt of 473nm

How much is the visable diference?

Is the 473 VERY much lighter or?

Ive been on the lookout for a blue module for a long time now and its seems that i will be buying soon.

I have 2 offers from two different companys right now wich is within my budget.,still waiting for a 3:d offer.

OFFER 1. 900mW 445nm & a Red 640nm 300mW (package deal)
OFFER 2. 1watt 473nm

The beamspecs are very similar on the blue´s, infact exactly the same.
05-31-2010, 07:22
mccarrot

I think 473nm will have a brighter beam, but 445 will get you a better white.

In chroma you can see the luminance of each color in the DOS box.

Here is the best of both worlds:
http://store.laserextreme.nl/catalog...products_id/33
05-31-2010, 07:29
allthatwhichis

Quote:

Originally Posted by rfourt

How much is the visable diference?

Is the 473 VERY much lighter or?

Ive been on the lookout for a blue module for a long time now and its seems that i will be buying soon.

I have 2 offers from two different companys right now wich is within my budget.,still waiting for a 3:d offer.

OFFER 1. 900mW 445nm & a Red 640nm 300mW (package deal)
OFFER 2. 1watt 473nm

The beamspecs are very similar on the blue´s, infact exactly the same.

Go with 1 Watt of 457... *vigil
05-31-2010, 08:06
kl79

Quote:

Originally Posted by allthatwhichis

Go with 1 Watt of 457... *vigil

Sure, for me it will be 800 or 1W 457nm ! (from laserextreme of course ! ;))
05-31-2010, 08:45
sbk

Definitely go with the 445nm, or with a 457 as well ! You'll get some fantastic colour gamut. As for brightness, you can simulate a blue from a 473nm by adding a bit of 532nm, and the brightness will go much higher than with only the blue.
I have a 900mW from RGBLaserSystems and very happy with it.

And with the 445nm diode, you'll get rid of the DPSS technology, which is an argument too (much faster and clean modulation unless you have an AOM, less temperature sensitive, less consumed power, less parts subject to failure, but counterpart is somewhat a bigger beam and a bit less bright).
05-31-2010, 10:36
mccarrot

Quote:

Originally Posted by sbk

And with the 445nm diode, you'll get rid of the DPSS technology, which is an argument too (much faster and clean modulation unless you have an AOM, less temperature sensitive, less consumed power, less parts subject to failure, but counterpart is somewhat a bigger beam and a bit less bright).

457nm modulates better than 473nm
457nm got better beam specs compared to 445nm
if a 445nm diode fails you are in trouble (money wise) if a pump diode fails its a cheap fix.
05-31-2010, 10:47
edison

MCcarrot has some good points. Mmm 900mw blue? sound like a RGB lasersystem module.

Personally i would go for a 445nm because of the better white. Combo,s are most of the time a good deal.
05-31-2010, 10:59
rfourt

I should have perhaps said that i am only interested in power.. although quality and beamspec is of importance.

but im not looking to create perfect white, im just trying to get as much power as possible.. i have a Green 1.7Watt allreay so now i want some blue to match that,, After i bought this blue i wil start eh hunt for red and aim for high power White. :)

so what you guys say. 457? or 445?

I know RGB systems are really nice although this 473 sounds very nice also, so hard to decide. The 473 is manufactured by: http://www.lasershow.hu/
ive never heard of them before thats why im litle worried.

but so far the 457 seems like the best option litle more expensive then the others but i get 1.5W wich is a nice number. :D

thnx for you input guys.
/Rick
05-31-2010, 11:31
edison

Without a doubt go for a 457. You still have the brightbeam and 1.5 watt of blue 457nm.

I compared prices and MCarrot has some good deals on the 457,s also on the greens.

But i think youre after a nice blue;)

Also he is a thrustworthy seller and service is excellent. Very important when buying a expencive laser like you have in mind
05-31-2010, 21:36
flecom

my new big blue should be here soon *retardo*retardo*retardo
05-31-2010, 21:41
drlava

Quote:

Originally Posted by mccarrot

I think 473nm will have a brighter beam..

Because 445nm is almost exactly the peak of the eye's blue sensitivity, couldn't you achieve the same beam apparent brightness of 473nm by injecting a little 532nm into the 445nm, if he wished?
05-31-2010, 22:00
flecom

Quote:

Originally Posted by drlava

Because 445nm is almost exactly the peak of the eye's blue sensitivity, couldn't you achieve the same beam apparent brightness of 473nm by injecting a little 532nm into the 445nm, if he wished?

a lot of people were talking about doing this with 405nm diodes, and personally I have never seen it done sucessfully... although in THEORY it is entirely possible... i would love to see somone pull it off properly though...

there was someone here that was combining a 445 and 473 via a PBS cube with good results IIRC
05-31-2010, 22:16
dave

Quote:

Originally Posted by drlava

Because 445nm is almost exactly the peak of the eye's blue sensitivity, couldn't you achieve the same beam apparent brightness of 473nm by injecting a little 532nm into the 445nm, if he wished?

Yeah, absolutely.

I prefer 445 as there is a lot LOT less to go wrong compared to 457 or 473. If the driver is designed well, as the Kvant drivers are, I don't think there is anything to worry about there.