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Old 07-30-2013, 12:17 AM #33
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Default Re: FS: Rubicon 5W Laser Power Meters

Here's a more extreme example, to show the effects of the slow response time. I used a LB 2.5W USB, an Ophir 20C-A, and a ~1.35W laser I had handy. I used a stopwatch to manually cycle the laser.

Not the most scientific test in the world, but it's just for illustrative purposes

At a 1s on/off cycle, the Ophir 20C-A reaches nearly 100%, while the LB 2.5W USB warms up and hovers at about 50% power.



With a 5s on/off cycle, the Ophir 20C-A reaches 100%, while the LB 2.5W USB warms up and ultimately only reaches about 80% power. When the laser is off, it only drops down to a value of 30% max power.



At best, many TEC LPM's only offer a rough approximation of the output of lasers whose outputs fluctuate.

Does that help?

Trevor


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Old 07-30-2013, 12:58 AM #34
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Default Re: FS: Rubicon 5W Laser Power Meters

Interesting. If need be I can replicate the results with a modulated laser for precision.

I'm surprised the Ophir performed so well even at 1Hz.
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Old 07-30-2013, 01:26 AM #35
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Default Re: FS: Rubicon 5W Laser Power Meters

thats actually a really interested find Trevor
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Old 07-30-2013, 04:54 AM #36
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Default Re: FS: Rubicon 5W Laser Power Meters

Wow that really shows the limitations of a TEC based meter... direct DL tend to just drop smoothly in power as heat builds up, but DPSS lasers have more complex and transient responses so a TEC graph of a DPSS is usually just good for an average. but even with direct DLs you sometimes get glitches, possible driver droops and things you want to see. When I see a TEC graph I take it as a rough estimate at best.
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Old 09-07-2013, 09:21 PM #37
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Default Re: FS: Rubicon 5W Laser Power Meters

Update: We've run out of the beige plastic and have decided to no longer stock it. All Rubicon cases are now being printed in Black
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Old 09-07-2013, 09:49 PM #38
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Default Re: FS: Rubicon 5W Laser Power Meters

Still waiting on a special run of GITD or Blue.....maybe clear
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Old 09-12-2013, 11:18 PM #39
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Default Re: FS: Rubicon 5W Laser Power Meters

Well I've got GITD Blue plastic

Haven't taken it out of the anti-moisture bag yet. May experiment printing cases with it later this weekend
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Old 09-12-2013, 11:53 PM #40
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Default Re: FS: Rubicon 5W Laser Power Meters

YES!!!!!!!!!!! KEEP ME INFORMED!!!!! Been wanting that or a clear case ever since you showed me the first case attempt! This is going to be EPIC, i hope

+1 when blah blah blah you get it
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Custom Titanium PL520- stable 80mW



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Old 11-04-2013, 02:12 AM #41
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Default Re: FS: Rubicon 10W & 5W Laser Power Meters

We are now offering 10W versions of the Rubicon.
The prices are the same as the 5W version.

Here's the announcement thread with more details:
Introducing the 10W Rubicon X LPM!
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Old 01-14-2014, 06:17 AM #42
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Default Re: FS: Rubicon 10W & 5W Laser Power Meters

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