Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Optics



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 02-07-2010, 03:54 PM #1
Junior Member
 
Join Date: Feb 2010
Posts: 22
Rep Power: 0
Grunff is on a distinguished road
Grunff Grunff is offline
Junior Member
 
Join Date: Feb 2010
Posts: 22
Rep Power: 0
Grunff is on a distinguished road
Default Fiber collimator

Hi all,

I have a 25W IR laser, the output of which is from a fiber (around 8 inches of fiber). I'd like to collimate the output of this fiber, to achieve a reasonably small (under 2mm) parallel beam.

I've tried to do this using a single focussing lens, but to no avail - I just can't achieve a parallel beam.

Why isn't this approach working, any ideas on how to make a collimator, or sources for a commercial collimator please?


Grunff is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 02-07-2010, 05:50 PM #2
KiLLrB's Avatar
Class 3R Laser
 
Join Date: Jan 2010
Location: Lubbock, TX USA
Posts: 1,097
Rep Power: 49
KiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond repute
Send a message via MSN to KiLLrB Send a message via Yahoo to KiLLrB
KiLLrB KiLLrB is offline
Class 3R Laser
KiLLrB's Avatar
 
Join Date: Jan 2010
Location: Lubbock, TX USA
Posts: 1,097
Rep Power: 49
KiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond repute
Send a message via MSN to KiLLrB Send a message via Yahoo to KiLLrB
Default Re: Fiber collimator

Quote:
Originally Posted by Grunff View Post
Hi all,

I have a 25W IR laser, the output of which is from a fiber (around 8 inches of fiber). I'd like to collimate the output of this fiber, to achieve a reasonably small (under 2mm) parallel beam.

I've tried to do this using a single focussing lens, but to no avail - I just can't achieve a parallel beam.

Why isn't this approach working, any ideas on how to make a collimator, or sources for a commercial collimator please?
25W or 25 mW and I am pretty sure you cant collimate after the beam has gone through the fiber optics.
__________________
3 keychain <5mW red lasers
2 ~5mW HeNe (632.8) See my HeNe Disassembly tut HERE
BluRay Laser Pointer
1W+ 445 by Yobresal LINK
sold* OPTO +150mW Green Laser pointer Review Here

FS: Custom circuits and test loads


Quote:
Originally Posted by nikokapo View Post
"Does this rag smell like chloroform to you?"
KiLLrB is offline   Reply With Quote
Old 02-07-2010, 06:04 PM #3
Asherz's Avatar
Class 3R Laser
 
Join Date: Jan 2009
Location: United Kingdom
Posts: 1,627
Rep Power: 64
Asherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond repute
Asherz Asherz is offline
Class 3R Laser
Asherz's Avatar
 
Join Date: Jan 2009
Location: United Kingdom
Posts: 1,627
Rep Power: 64
Asherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond repute
Default Re: Fiber collimator

Quote:
Originally Posted by KiLLrB View Post
25W or 25 mW and I am pretty sure you cant collimate after the beam has gone through the fiber optics.
I'm quite sure fiber coupled diodes are mostly in the 25W region. It's collimated through the fiber optic so you can have precise control of where you are burning, and it can be run through a X/Y cutting machine without size issues in the head.
__________________
- 150mW Ehgemus Mini-RPL Review -

Collection of the Best Free games

445nm Custom build@1A - Old style Dorcy Jr. + purple anodized heatsink
Dino Direct 50mW Flashlight unit
DX True green 100mW
O-like module @ 171mW in Mini-RPL host
Single-line Argon @ 52mW 488nm Peak
PHR-803T @ 110mA in Jayrob MXDL host
DX Red 660nm 200mW
Dragon lasers 190nm-548nm Safety Goggles
Asherz is offline   Reply With Quote
Old 02-07-2010, 06:05 PM #4
Junior Member
 
Join Date: Feb 2010
Posts: 22
Rep Power: 0
Grunff is on a distinguished road
Grunff Grunff is offline
Junior Member
 
Join Date: Feb 2010
Posts: 22
Rep Power: 0
Grunff is on a distinguished road
Default Re: Fiber collimator

Quote:
Originally Posted by KiLLrB View Post
25W or 25 mW and I am pretty sure you cant collimate after the beam has gone through the fiber optics.
It's 25W, really

I've found a few commercial collimators, but can't find where to buy one. Like:

Thorlabs.com - Fiber Coupled Collimators

Also, since this is a hobby project, I'd prefer to build one if possible.
Grunff is offline   Reply With Quote
Old 02-07-2010, 06:10 PM #5
KiLLrB's Avatar
Class 3R Laser
 
Join Date: Jan 2010
Location: Lubbock, TX USA
Posts: 1,097
Rep Power: 49
KiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond repute
Send a message via MSN to KiLLrB Send a message via Yahoo to KiLLrB
KiLLrB KiLLrB is offline
Class 3R Laser
KiLLrB's Avatar
 
Join Date: Jan 2010
Location: Lubbock, TX USA
Posts: 1,097
Rep Power: 49
KiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond reputeKiLLrB has a reputation beyond repute
Send a message via MSN to KiLLrB Send a message via Yahoo to KiLLrB
Default Re: Fiber collimator

Quote:
Originally Posted by Grunff View Post
It's 25W, really

I've found a few commercial collimators, but can't find where to buy one. Like:

Thorlabs.com - Fiber Coupled Collimators

Also, since this is a hobby project, I'd prefer to build one if possible.
Hmm I was unaware you could collimate laser light after it passed through several fibers effectively changing the path of the light through each fiber.
__________________
3 keychain <5mW red lasers
2 ~5mW HeNe (632.8) See my HeNe Disassembly tut HERE
BluRay Laser Pointer
1W+ 445 by Yobresal LINK
sold* OPTO +150mW Green Laser pointer Review Here

FS: Custom circuits and test loads


Quote:
Originally Posted by nikokapo View Post
"Does this rag smell like chloroform to you?"
KiLLrB is offline   Reply With Quote
Old 02-09-2010, 12:51 AM #6
KGB_Productions's Avatar
Class 2M Laser
 
Join Date: Dec 2008
Location: New Orleans
Posts: 878
Rep Power: 232
KGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond repute
Send a message via AIM to KGB_Productions Send a message via MSN to KGB_Productions
KGB_Productions KGB_Productions is offline
Class 2M Laser
KGB_Productions's Avatar
 
Join Date: Dec 2008
Location: New Orleans
Posts: 878
Rep Power: 232
KGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond reputeKGB_Productions has a reputation beyond repute
Send a message via AIM to KGB_Productions Send a message via MSN to KGB_Productions
Default Re: Fiber collimator

Quote:
Originally Posted by Grunff View Post
It's 25W, really

I've found a few commercial collimators, but can't find where to buy one. Like:

Thorlabs.com - Fiber Coupled Collimators

Also, since this is a hobby project, I'd prefer to build one if possible.
maybe something like... LASER SYSTEM OPTICAL COMPONENTS [ International Laser Productions ] ?
3 Down.

I don't know if it can handle 25W tho, but may be cheaper than thorlabs.
__________________
10W RGB DT40-Pro
2x 5W RGB DT40 Pro
2x 4W RGB DT40 WIDE
2x 1W Green DT40 Pro
QM.net
2x FB3
Pangolin LivePro
Pangolin Beyond
Pangolin QuickShow
*********
Lab Style Lasers
2x Kvant 1W 640nm-- 3x CNI 1.5W 532-- 5x Laserwave 1.5W 532-- 2x 1.3W 445nm-- 2x RB 2W
Pointers
750mw 445nm*160mw 405nm * 200mw DX Green ~ 15mw Pulsed Green * 200mw DX Red *

KGBLASERS.COM

Last edited by KGB_Productions; 02-09-2010 at 12:54 AM.
KGB_Productions is offline   Reply With Quote
Old 02-09-2010, 06:30 PM #7
Banned
 
Join Date: Apr 2007
Location: Cupertino CA
Posts: 1,076
Rep Power: 0
Laser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond repute
Send a message via AIM to Laser_Ben
Laser_Ben Laser_Ben is offline
Banned
 
Join Date: Apr 2007
Location: Cupertino CA
Posts: 1,076
Rep Power: 0
Laser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond repute
Send a message via AIM to Laser_Ben
Default Re: Fiber collimator

You can collimate the output from the fiber. You have to take into account several factors including the size of the fiber, the numerical aperture of the fiber, and the desired divergence of the fiber.

Because you have a 25W diode, I am assuming you have a Coherent FAP or similar diode, which means you have a fiber with 800um diameter and 0.2NA. That means you will have a 800um 25degree beam directly out of the fiber.

Now, you can figure out approximately what size you need to have to get it to the divergence you want. Multiply the beam diameter by 2 for each time you half the divergence. For example, if you wanted to have a 12 degree beam, you would now have a 1.6mm diameter beam. Do that again and you are down to 6 degrees with a 3.2mm beam diameter.

As you can see, you will have a very large beam before you get a low divergence.
Laser_Ben is offline   Reply With Quote
Old 03-09-2010, 06:31 AM #8
Kenom's Avatar
Class 4 Laser
 
Join Date: May 2007
Posts: 5,629
Rep Power: 304
Kenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond repute
Send a message via MSN to Kenom
Kenom Kenom is offline
Class 4 Laser
Kenom's Avatar
 
Join Date: May 2007
Posts: 5,629
Rep Power: 304
Kenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond repute
Send a message via MSN to Kenom
Default Re: Fiber collimator

I also have these focus tools which are NOT designed for colimating only focusing





Kenom is offline   Reply With Quote
Old 03-09-2010, 09:15 AM #9
HIMNL9's Avatar
Class 4 Laser
 
Join Date: May 2009
Location: Lost somewhere in the EU mess ;)
Posts: 5,416
Rep Power: 404
HIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond repute
HIMNL9 HIMNL9 is offline
Class 4 Laser
HIMNL9's Avatar
 
Join Date: May 2009
Location: Lost somewhere in the EU mess ;)
Posts: 5,416
Rep Power: 404
HIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond reputeHIMNL9 has a reputation beyond repute
Default Re: Fiber collimator

The worse problem, with fiber coupled units, is that, usually, there's not a single fiber, but a lot of them, paralleled, so it's almost impossible to obtain a single "beam" from a collimator (maybe with a 2-elements, or a 3-elements, collimators, but this become a lot high cost, usually)

They are planned, mainly, for transfer the IR to a "point" collimator for burning/etching/cutting purposes, not for make "straight beams"
__________________
High Impulse Multipath Neutron Laser (mark 9 ) (LOL)
Dare mo mita koto no nai, kaze, kumo, suna, umi ..... Kokoro no hate no doko ka eien ga kagayaku.
HIMNL9 is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 09:51 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC