Received the second component of my future project

74 posts / 0 new
Last post

Pages

Enderman
Enderman's picture
Offline
Last seen: 2 days 6 hours ago
Joined: 11/03/2016 - 22:42
Posts: 3960
Location: Vancouver, Canada
Received the second component of my future project



https://www.crytur.cz/products/cryphosphor-single-crystal-phosphor/
So I finally got my hands on some single crystal YAG:Ce phosphors! Big Smile
Not cheap, over $300 because the minimum order quantity was 5, and they are only 3mm x 3mm.
They had some 5mm x 5mm ones too but that would have cost me over twice as much, although those would have been easier to work with.

Next items on my purchase list:
-blue laser
-blue laser driver
-blue laser lens
-blue laser protection goggles

It will be a while before I can test out the performance of the phosphors but I’m really excited anyway Smile

Edited by: Enderman on 12/13/2018 - 20:02
gamezawy
gamezawy's picture
Offline
Last seen: 3 days 5 hours ago
Joined: 10/08/2013 - 07:34
Posts: 498
Location: Egypt

looks interesting project Thumbs Up

MRsDNF
MRsDNF's picture
Offline
Last seen: 1 day 3 hours ago
Joined: 12/22/2011 - 21:18
Posts: 12946
Location: A light beam away from the missus in the land of Aus.

What can I say but highly looking forward to another one of your amazing world beating builds. Beer

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

staticx57
Offline
Last seen: 3 hours 39 min ago
Joined: 04/11/2016 - 00:43
Posts: 657
Location: New Jersey, United States

Cannot wait

Enderman
Enderman's picture
Offline
Last seen: 2 days 6 hours ago
Joined: 11/03/2016 - 22:42
Posts: 3960
Location: Vancouver, Canada

I’ve never been so excited to own a tiny expensive yellow square

WillyD
Offline
Last seen: 3 weeks 2 days ago
Joined: 10/10/2012 - 15:55
Posts: 779
Location: Ohio

Sure you didn’t “find” those in an “abandoned” warehouse?? LOL LOL
Can’t wait to see what you do with ‘em. Did you study physics or engineering by chance? Just curious.

pinkpanda3310
pinkpanda3310's picture
Offline
Last seen: 1 day 4 hours ago
Joined: 12/28/2013 - 08:45
Posts: 2086
Location: Perth

Always interested in your builds. Being laser powered this one has my attention.

RPI
Offline
Last seen: 1 month 3 weeks ago
Joined: 09/14/2017 - 04:36
Posts: 78

such a cool looking project

Tally-ho
Tally-ho's picture
Offline
Last seen: 8 hours 39 min ago
Joined: 07/23/2011 - 04:15
Posts: 1250
Location: France

I anticipate another enderman’s epic build…with several LEPs ?

Enderman
Enderman's picture
Offline
Last seen: 2 days 6 hours ago
Joined: 11/03/2016 - 22:42
Posts: 3960
Location: Vancouver, Canada

WillyD wrote:
Sure you didn’t “find” those in an “abandoned” warehouse?? LOL LOL
Can’t wait to see what you do with ‘em. Did you study physics or engineering by chance? Just curious.

Hahaha I actually had to pay for these!
I’m currently in engineering.
pinkpanda3310 wrote:
Always interested in your builds. Being laser powered this one has my attention.

RPI wrote:
such a cool looking project

Thanks Smile

Tally-ho wrote:
I anticipate another enderman’s epic build…with several LEPs ?

Nah just one, but minimum order quantity was 5.
Probably a good thing though because I’m sure I will burn through at least some of them…
djozz
djozz's picture
Offline
Last seen: 44 min 52 sec ago
Joined: 09/07/2012 - 17:04
Posts: 15667
Location: Amsterdam

Cool!

The world is becoming more interesting since you can just buy anything now that used to be only available to specialised companies.

I’m sure that you will have more than $300 worth of fun with these! Smile

Enderman
Enderman's picture
Offline
Last seen: 2 days 6 hours ago
Joined: 11/03/2016 - 22:42
Posts: 3960
Location: Vancouver, Canada

djozz wrote:
Cool!

The world is becoming more interesting since you can just buy anything now that used to be only available to specialised companies.

I’m sure that you will have more than $300 worth of fun with these! Smile


Sure hope so! Big Smile
Agro
Agro's picture
Online
Last seen: 5 sec ago
Joined: 05/14/2017 - 11:16
Posts: 4490
Location: Ślōnsk

I wonder what would it do on top of White Flat die…

Enderman
Enderman's picture
Offline
Last seen: 2 days 6 hours ago
Joined: 11/03/2016 - 22:42
Posts: 3960
Location: Vancouver, Canada

Agro wrote:
I wonder what would it do on top of White Flat die…

If I knew how to remove the phosphor layer from a white flat I could try it.
Agro
Agro's picture
Online
Last seen: 5 sec ago
Joined: 05/14/2017 - 11:16
Posts: 4490
Location: Ślōnsk

All I know is that Saablaster claimed to be able to swap phosphor from SST-40 to XHP35. As well as to lift the die off the XHP35 package and put it on a diamond heatsink. Osram LEDs are different, but maybe he would be capable of doing a similar surgery to them as well.
Would he be willing to help you with that? I have no idea.

The_Driver
The_Driver's picture
Offline
Last seen: 17 hours 11 min ago
Joined: 10/20/2016 - 05:51
Posts: 1402
Location: Germany

Very nice! Do you plan on beating polar-li’s BFF (farthest thtoewing portable light)?

Xandre
Xandre's picture
Offline
Last seen: 4 hours 19 min ago
Joined: 03/06/2011 - 07:02
Posts: 403
Location: South Germany

Good idea

My plan was to kill a Weltool
take the inside
and put it together with a 120 mm lens and Collar.

But I do not do this,cause the power is to less,

If yo wanna sell 2 pieces of the single crystal YAG:Ce phosphors
I will buy it.Send me a message please .

Thanks in advance

Xandre

Enderman
Enderman's picture
Offline
Last seen: 2 days 6 hours ago
Joined: 11/03/2016 - 22:42
Posts: 3960
Location: Vancouver, Canada

The_Driver wrote:
Very nice! Do you plan on beating polar-li’s BFF (farthest thtoewing portable light)?

Which one? Is it on the list or am I missing it?
http://budgetlightforum.com/node/55467

Xandre wrote:
Good idea

My plan was to kill a Weltool
take the inside
and put it together with a 120 mm lens and Collar.

But I do not do this,cause the power is to less,

If yo wanna sell 2 pieces of the single crystal YAG:Ce phosphors
I will buy it.Send me a message please .

Thanks in advance

Xandre

Sounds good, I’ll let you know if I have spares Smile

The_Driver
The_Driver's picture
Offline
Last seen: 17 hours 11 min ago
Joined: 10/20/2016 - 05:51
Posts: 1402
Location: Germany
Enderman wrote:
The_Driver wrote:
Very nice! Do you plan on beating polar-li’s BFF (farthest thtoewing portable light)?
Which one? Is it on the list or am I missing it? http://budgetlightforum.com/node/55467

This light , the BFF, will beat them all. We don’t really need a measurement to know that. He is using a special bulb with an extremely high luminance that I never knew existed before.

A conservative estimation puts the throw at around 250Mcd.

Enderman
Enderman's picture
Offline
Last seen: 2 days 6 hours ago
Joined: 11/03/2016 - 22:42
Posts: 3960
Location: Vancouver, Canada

The_Driver wrote:

This light , the BFF, will beat them all. We don’t really need a measurement to know that. He is using a special bulb with an extremely high luminance that I never knew existed before.

A conservative estimation puts the throw at around 250Mcd.


Oh cool Smile
Well I only have very rough theoretical numbers which are probably not anywhere close to real performance, but I have high hopes.
Once I order the laser and start doing intensity test of the phosphor crystal then I will have a better idea.
EasyB
Offline
Last seen: 2 months 3 weeks ago
Joined: 03/09/2016 - 15:24
Posts: 1679
Location: Ohio

Sounds like a fun project!

I know you are all about the luminance, but I wonder how much output you can get. Say you get a 10W output blue laser. Max theoretical efficacy for excited phosphor is 300 lumens/W. Say you get half that to account for phosphor inefficiency and light emitted backwards. Then that is 1500 lumens. Is that on the right track?

EasyB
Offline
Last seen: 2 months 3 weeks ago
Joined: 03/09/2016 - 15:24
Posts: 1679
Location: Ohio

You could put a hemispherical reflecting collar on the bottom too to recycle the light going down.

Enderman
Enderman's picture
Offline
Last seen: 2 days 6 hours ago
Joined: 11/03/2016 - 22:42
Posts: 3960
Location: Vancouver, Canada

EasyB wrote:
Sounds like a fun project!

I know you are all about the luminance, but I wonder how much output you can get. Say you get a 10W output blue laser. Max theoretical efficacy for excited phosphor is 300 lumens/W. Say you get half that to account for phosphor inefficiency and light emitted backwards. Then that is 1500 lumens. Is that on the right track?


Yeah probably about that much.
A research paper got 4k lumens with 14W of lasers.
The highest power single blue laser is about 7W though, so about 2k lumens, not sure how much will be wasted out the back, maybe 50% or maybe less.

EasyB wrote:
You could put a hemispherical reflecting collar on the bottom too to recycle the light going down.

Possible, but I need to have cooling on that side so I can’t fit a second collar.
Jerommel
Jerommel's picture
Offline
Last seen: 3 months 2 weeks ago
Joined: 01/04/2014 - 13:18
Posts: 5721
Location: the Hague, Netherlands

Awesome.
Wish i had the funds for such things..

Planning to make it a ‘shine through’ set up?

Does that phosphor emit only yellow or is it a wider band?

Are you gonna get pieces of diamond to $andwich the phosphor?

2Q19

Enderman
Enderman's picture
Offline
Last seen: 2 days 6 hours ago
Joined: 11/03/2016 - 22:42
Posts: 3960
Location: Vancouver, Canada

Jerommel wrote:
Awesome.
Wish i had the funds for such things..

Planning to make it a ‘shine through’ set up?

Does that phosphor emit only yellow or is it a wider band?

Are you gonna get pieces of diamond to $andwich the phosphor?


Yeah it will be through.
It emits a spectrum of light like a regular phosphor would:

I bought the yellow.

No I can’t afford diamond plates for cooling Big Smile

Jerommel
Jerommel's picture
Offline
Last seen: 3 months 2 weeks ago
Joined: 01/04/2014 - 13:18
Posts: 5721
Location: the Hague, Netherlands

Interesting. Thumbs Up

My imagination runs wild, but i have no data / specs..

Is the phosphor water resistant?
Thinking glass – water – Phosphor – water – glass sandwich, water pumped through the sandwich.
Because obviously the Phosphor will get crazy hot when you point a metal cutting laser at it… Wink

I’ve been thinking about the ‘reflecting LEP’ too, with an extremely tiny parabola behind the Phosphor, a tiny dent in a aluminium (coated) heat sink.
The dent has to be filled with a piece of Phosphor.
I think it will produce horrible tint shift artefacts though…
Other than that, it’s so small, how are you gonna shape a 1 – 2 mm diameter parabola in a piece of metal, and coat it with PVD ?
Let alone put the right shape of Phosphor in there…

How thick is the Phosphor you bought?

2Q19

Enderman
Enderman's picture
Offline
Last seen: 2 days 6 hours ago
Joined: 11/03/2016 - 22:42
Posts: 3960
Location: Vancouver, Canada

Yeah it’s water resistant, it’s just a crystal.
Water would change the refractive index and would probably make focusing stuff problematic.
Also even though it has very high heat capacity the conductivity is not that high so the small area of the crystal wouldn’t dissipate much heat.

There have been experiments using liquid which has phosphor particles in it within a cooling loop so it’s cycling the phosphor through a radiator for cooling.

The phosphor plates are 0.25mm thick.

Jerommel
Jerommel's picture
Offline
Last seen: 3 months 2 weeks ago
Joined: 01/04/2014 - 13:18
Posts: 5721
Location: the Hague, Netherlands

Enderman wrote:
Yeah it’s water resistant, it’s just a crystal.
So is salt. Smile
Quote:

Water would change the refractive index and would probably make focusing stuff problematic.
You’ll get it focussed, i’m sure. Smile
Quote:

Also even though it has very high heat capacity the conductivity is not that high so the small area of the crystal wouldn’t dissipate much heat.

Maybe i’m under- or overestimating something, but 0.25mm of anything sandwiched between running water will have a very hard time getting hot.
All will go dramatically wrong though, when the water reaches 100°C somehow…
Can’t imagine that happening with proper water flow though, but i could be wrong.
But water is an awesome cooling medium. Very high thermal capacity.
Oh, and it’s as clear as water, of course. Silly

Quote:

There have been experiments using liquid which has phosphor particles in it within a cooling loop so it’s cycling the phosphor through a radiator for cooling.

Interesting idea.
You’ll need more Phosphor though..
But i guess powdered Phosphors, as used in LED dies are not that expensive.
Quote:
The phosphor plates are 0.25mm thick.

One more question.
What diameter laser beam do you plan on hitting the Phosphor?
1.5 mm ? Less?

2Q19

Enderman
Enderman's picture
Offline
Last seen: 2 days 6 hours ago
Joined: 11/03/2016 - 22:42
Posts: 3960
Location: Vancouver, Canada

Jerommel wrote:

One more question.
What diameter laser beam do you plan on hitting the Phosphor?
1.5 mm ? Less?

It will be concentrated, not sure how small I can go before burning the crystal but I’m gonna try .1mm square.
Jerommel
Jerommel's picture
Offline
Last seen: 3 months 2 weeks ago
Joined: 01/04/2014 - 13:18
Posts: 5721
Location: the Hague, Netherlands

.1 mm² ?? Shocked

2Q19

Enderman
Enderman's picture
Offline
Last seen: 2 days 6 hours ago
Joined: 11/03/2016 - 22:42
Posts: 3960
Location: Vancouver, Canada

Jerommel wrote:
.1 mm² ?? Shocked

0.1 × 0.1 mm
Smile Smile Smile

Pages