Old 02-10-2018, 01:32 AM #33
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Default Re: Super small YAG laser cavity

I'm thinking PPal can fix it, since he won't offer a reduced price, 200 dollars for that module was top dollar, I expected it to be in perfect working order, he said it was. Doesn't matter if he didn't know, a buying agreement is an agreement.


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Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3
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Old 02-10-2018, 02:28 AM #34
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Default Re: Super small YAG laser cavity

Christ I can offer you 30 dollars back. That’s about how much they are probably worth if you could ever find one. I literally don’t even have enough money to buy gas for my car right now for two weeks. I work at arbys and get paid 8 dollars an hour (by the way it sucks). If you can wait two weeks I can offer you 30 dollars back. Does that sound okay Chris? I seriously didn’t know it was broken but since everyone here thinks I knew it was broken I’ll be the nice dude and do that. Okay?
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Old 02-10-2018, 02:31 AM #35
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Default Re: Super small YAG laser cavity

OK, accepted but not now, in the future, or 30 dollars off of something else you might want to sell, if you give me first shot.
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Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3
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Old 02-10-2018, 02:38 AM #36
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Default Re: Super small YAG laser cavity

Alright a deal is a deal. You get 30 off and first shot at anything I sell. By the way would you like to buy a mirrored YAG rod? Iím putting it up for sale on eBay for a lot, but PM if interested and you can have 30 off and a special price, itís pretty large Iíd say 1/4 inch by 3.5 long. Very nice too (absolutely nothing wrong with it I promise)
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Old 02-10-2018, 02:50 AM #37
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Default Re: Super small YAG laser cavity

Also how much do you think this tiny ER:YAG module would cost Kigre, Inc. - MK-2
It is as small as like 2 pennies and is diode pumped. I wanna call them but they are closed. I’m sure being that small it won’t cost an arm and a leg? I’m going to say 200-300 with driver and it is q-switched. What do you guys say?
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Old 02-10-2018, 03:04 AM #38
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Default Re: Super small YAG laser cavity

.2 mj, wisp of power. Please remember I said 30 dollars, or 30 off on something you are selling. I don't know if I will want what you are selling, in that case, the cash. That's going light, I saw a SSY-1 q-switch sold for 40 on ebay a few months ago.
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Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3

Last edited by Alaskan; 02-10-2018 at 03:11 AM.
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Old 02-10-2018, 03:11 AM #39
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Default Re: Super small YAG laser cavity

Passive Q-Switched 1534nm. Brand new, it's hard to say what they want for it. Probably won't be cheap. It isn't made as a hobby instrument.
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Old 02-10-2018, 03:19 AM #40
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Default Re: Super small YAG laser cavity

Brandon, I'm starting to think you are somewhat of a con artist, did you start using an account your dad created here, or ? I see the same user name on Photolex:



Did you make like 50 bucks profit on that broken SSY-1 you sold me?
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Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3
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Old 02-10-2018, 03:29 AM #41
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Default Re: Super small YAG laser cavity

No, that is my dad using my account on photon, he said he wanted to try and see if he could get me one, but he ended up not getting one there, but instead got one for 250 so actually he lost money on that deal. So no that was my father but on my account, he didnít create his own because heís not too tech savvy is how I think you say it. And I was just offering the YAG rod for now, I will probably be selling more things soon if you still would like 30-40 off on those since you saw one go for 40.


Also so that little laser probably wonít do anything then? Waste of money perhaps? Or could it be used to like frequency double? Probably not but I might as well ask
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Old 02-10-2018, 03:44 AM #42
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Default Re: Super small YAG laser cavity

having some fun with it, but i still think you are a wheeler dealer getting what you want with the youth card, AKA the rod mirroring, what you going to do when you get old?
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Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3
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Old 02-10-2018, 03:55 AM #43
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Default Re: Super small YAG laser cavity

The rod mirroring he does for some hobbyists, I found that out through a website where another guy asked him to do it also I am not sure what Iíll do when I get old yet, Iíve got a few years to think about it but for now Iíd rather think about lasers also I do want to go to school for photonics and optics if that makes it any better/cooler only 1 more year of normal school then off to college I go to become a scientist hopefully. I would love to work in labs and universities. That would be fun I think, Iím not sure but itís just something about lasers that fascinate me, I mean Iíve been yelled at by the parents for having them all over my floor and stuff, but i continue to keep em there because I get urges to sit on the floor and fire the larger YAG laser every now and then just for no reason
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Old 02-10-2018, 04:05 AM #44
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Default Re: Super small YAG laser cavity

Are you selling the rod that guy is mirroring for you? Re: HV circuit on the floor, kinda scares me you'll end in an early demise.
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Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3
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Old 02-10-2018, 04:13 AM #45
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Default Re: Super small YAG laser cavity

No I wouldnít do that, this is one I paid for a month or two back with my own money, from the one guy in Italy on eBay, I asked him how he got it to work without mirrors and he said it is magical being sarcastic at the time I didnít know they came with mirrors integrated, but Iím selling it now because Iím getting the smaller one coated and the ruby one coated, someone else should get to enjoy the fun on not aligning anything, just covering it with foil beside a flashlamp, connect a trigger transformer to foil and tada working yag laser.
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Old 02-10-2018, 04:14 AM #46
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Default Re: Super small YAG laser cavity

I have a total of 5 mirrored rods after I get the ones mirrored by the one guy.
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Old 02-10-2018, 04:27 AM #47
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Default Re: Super small YAG laser cavity

All the same?
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Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3
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Old 02-10-2018, 04:34 AM #48
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Default Re: Super small YAG laser cavity

Well they are ND:YAG just different sizes the biggest I have is around 6-7mm and like 5-6 inches in length, thatís my favorite one or at least the one I use most, but I do have an interesting rod, not mirrored but CTH:YAG I think Iíve posted about it before, but 8ms fluorescence time is crazy, and itís like green lantern green too it looks cool, also bought from Italian guy. But besides that yes they are the same kind of rods
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Sanwu Pocket 250mw 650nm

Melles Griot 85-RCA-400 400mw 660nm

IPG PLD-40-974 30w Fiber Coupled Laser 974nm

Sanwu challenger 300mw 405nm

180J ND:YAG Head with optics

SSY-1 ND:YAG

CTH:YAG 300 Joules

YB:YAG (tiny)

ND:YVO4 green second harmonic dpss

M60 Ruby Laser

Ruby laser integrated mirrors

Big sky ER:YAG
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cavity, diode, neodymium, optics, yag





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