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| Guest |
 Posted: Fri Feb 15, 2008 11:25 pm |
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Dear Colleagues,
I have a quite easy technical question. I need to split the laser beam
and then keep them paralel something like 2mm from each other. The
laser beam is TEM00, wavelength 1um, about 100W and not polarized.
The problem is the space. Does exists some microoptic splitters and
prisms solution for this case?
I think about combination: small size beam splitter - mirror - wedge
prism.
What would you suggest?
best regards
Sebastian |
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| whit3rd |
| Posted: Sat Feb 16, 2008 10:35 am |
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Guest
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On Feb 16, 1:25 am, yetibi...@googlemail.com wrote:
Quote: I have a quite easy technical question. I need to split the laser beam
and then keep them parallel something like 2mm from each other.
If you don't care about polarization, iceland spar (calcite) in a
simple
plate will double the beam. |
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| Barry Cense |
| Posted: Sun Feb 17, 2008 4:12 pm |
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Guest
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On Feb 16, 4:25 am, yetibi...@googlemail.com wrote:
Quote: Dear Colleagues,
I have a quite easy technical question. I need to split the laser beam
and then keep them paralel something like 2mm from each other. The
laser beam is TEM00, wavelength 1um, about 100W and not polarized.
The problem is the space. Does exists some microoptic splitters and
prisms solution for this case?
I think about combination: small size beam splitter - mirror - wedge
prism.
What would you suggest?
best regards
Sebastian
What about the power in both beams? Should it be equal? |
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| Mike |
| Posted: Sun Feb 17, 2008 8:05 pm |
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Guest
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<yetibiker@googlemail.com> wrote in message
news:a5e77d61-9330-461a-b741-28db113beb21@62g2000hsn.googlegroups.com...
Quote: Dear Colleagues,
I have a quite easy technical question. I need to split the laser beam
and then keep them paralel something like 2mm from each other. The
laser beam is TEM00, wavelength 1um, about 100W and not polarized.
The problem is the space. Does exists some microoptic splitters and
prisms solution for this case?
I think about combination: small size beam splitter - mirror - wedge
prism.
What would you suggest?
Calcite is transparent to opaque and may occasionally show phosphorescence
or fluorescence. It is perhaps best known because of its power to produce
strong double refraction of light, such that objects viewed through a clear
piece of calcite appear doubled in all of their parts-a phenomenon first
described by Rasmus Bartholin. A beautifully transparent variety used for
optical purposes comes from Iceland, called Iceland spar. Acute
scalenohedral crystals are sometimes referred to as "dogtooth spar".
Quote:
best regards
Sebastian |
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| Mike |
| Posted: Sun Feb 17, 2008 8:10 pm |
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Guest
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| Guest |
| Posted: Sun Feb 17, 2008 11:02 pm |
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On 18 Feb., 03:12, Barry Cense <barry_in_bos...@hotmail.com> wrote:
Quote: On Feb 16, 4:25 am, yetibi...@googlemail.com wrote:
Dear Colleagues,
I have a quite easy technical question. I need to split the laser beam
and then keep them paralel something like 2mm from each other. The
laser beam is TEM00, wavelength 1um, about 100W and not polarized.
The problem is the space. Does exists some microoptic splitters and
prisms solution for this case?
I think about combination: small size beam splitter - mirror - wedge
prism.
What would you suggest?
best regards
Sebastian
What about the power in both beams? Should it be equal?
Thank you for your suggestions.
You have right, with birefringence cristall the task will be easier to
fullfill then with some combination of small size beam splitter, prism
and wedge prism or even additional plan plate.
The power in the beams should be the same.
but some calcit cristalls, in small size (5x5x5mm^3), coated with
AR@1miciron and power density < 20kW/cm^2 ???? will be stable and
reliable for commercial installations?
what about the price?
Sebastian |
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| Guest |
| Posted: Mon Feb 18, 2008 4:51 am |
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On Feb 18, 4:02 am, yetibi...@googlemail.com wrote:
Quote: On 18 Feb., 03:12, Barry Cense <barry_in_bos...@hotmail.com> wrote:
On Feb 16, 4:25 am, yetibi...@googlemail.com wrote:
Dear Colleagues,
I have a quite easy technical question. I need to split the laser beam
and then keep them paralel something like 2mm from each other. The
laser beam is TEM00, wavelength 1um, about 100W and not polarized.
The problem is the space. Does exists some microoptic splitters and
prisms solution for this case?
I think about combination: small size beam splitter - mirror - wedge
prism.
What would you suggest?
best regards
Sebastian
What about the power in both beams? Should it be equal?
Thank you for your suggestions.
You have right, with birefringence cristall the task will be easier to
fullfill then with some combination of small size beam splitter, prism
and wedge prism or even additional plan plate.
The power in the beams should be the same.
but some calcit cristalls, in small size (5x5x5mm^3), coated with
AR@1miciron and power density < 20kW/cm^2 ???? will be stable and
reliable for commercial installations?
what about the price?
Sebastian
If natural calcite cannot be found that will meet your high-power
specifications, don't lose sight of other birefringent materials.
ThorLabs has (had?) some handsome crystals of YVO4, cut and polished
to act as beam separators by the same mechanism. Since these samples
are artificially produced, you could probably get specifications for
loss and damage threshold.
Good hunting--D. Van Baak |
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| Dave Schaack |
| Posted: Tue Feb 19, 2008 10:27 am |
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Guest
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<yetibiker@googlemail.com> wrote in message
news:122893c5-a9b6-45a7-adf0-2b57be52211f@72g2000hsu.googlegroups.com...
Quote:
Thank you for your suggestions.
You have right, with birefringence cristall the task will be easier to
fullfill then with some combination of small size beam splitter, prism
and wedge prism or even additional plan plate.
The power in the beams should be the same.
but some calcit cristalls, in small size (5x5x5mm^3), coated with
AR@1miciron and power density < 20kW/cm^2 ???? will be stable and
reliable for commercial installations?
what about the price?
Sebastian
Sebastian, you will have to inquire with fabricators of calcite to answer
these questions. In the US, Karl Lambrecht corporation is a good source.
If calcite does not work for you, and you have a production application, you
could try Agilent.
Agilent (used to be Hewlett-Packard) has recently been advertising their
capability in what they call "complex monolithic optics". These are exactly
what you are talking about.
optics-info@agilent.com
www.agilent.com/find/optics |
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| Charles Manoras |
| Posted: Sun Feb 24, 2008 1:14 am |
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Guest
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<yetibiker@googlemail.com> wrote
Quote: I have a quite easy technical question. I need to split the laser beam
and then keep them paralel something like 2mm from each other. The
laser beam is TEM00, wavelength 1um, about 100W and not polarized.
The problem is the space. Does exists some microoptic splitters and
prisms solution for this case?
I think about combination: small size beam splitter - mirror - wedge
prism.
What would you suggest?
If as suggested you are going to use a brefringent crystal,
the 100W worries me a little, how wide is your beam?
Also "not polarized" has sometimes to be taken with a
grain of salt, especially with pure TEM00... |
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| Guest |
| Posted: Sun Feb 24, 2008 8:04 am |
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On 24 Feb., 06:47, "Charles Manoras" <inco...@cette.adresse> wrote:
Quote: yetibi...@googlemail.com> wrote
I have a quite easy technical question. I need to split the laser beam
and then keep them paralel something like 2mm from each other. The
laser beam is TEM00, wavelength 1um, about 100W and not polarized.
The problem is the space. Does exists some microoptic splitters and
prisms solution for this case?
I think about combination: small size beam splitter - mirror - wedge
prism.
What would you suggest?
If as suggested you are going to use a brefringent crystal,
the 100W worries me a little, how wide is your beam?
Also "not polarized" has sometimes to be taken with a
grain of salt, especially with pure TEM00...
yes I know that it's a lot of power. the beam can be between 0.5 and
5mm  so if it will be critical point I will use about 5mm.
EdmundOptics is proposing something like beam displacer, i.e. beam
splitter and prism glued together - some alternative for a birefringer
cristalls :)
Sebastian |
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