Modelling VCSEL with ZEMAX

[Sven Voigt]

Hello world!

I am trying to design an optical system that uses a VCSEL array as
light source. As I am yet very new to ZEMAX I couldn't find an
apporpriate way of simulating VCSELs. The problem is their flat
extension with a given cone angle.

Having tried the field feature and NSC, nothing satisfied our needs.
The NSC Source Ellipse in particular has no angle limitation.

If anybody could please hint me to any web source or show up with a
ZEMAX solution, I'd be very thankful! :-)

Many greetings from Germany...

Sven Voigt

Institut für Mikrotechnik Mainz GmbH, Optik
Carl-Zeiss-Strasse 18-20, 55129 Mainz
Telefon: 06131/990-160, http://www.imm-mainz.de

[parryj...@gmail.com]

Hi Sven,

I do this two ways: 1) Non-sequential mode, and 2)sequential mode. I think you want to consider non-sequential.

1) For non-sequential mode: I do this trick... that is not perfect but close enough. I use the "source diode" and let the VCSEL be described as an array of square emitters without astigmatism. Input the FWHM per the ZEMAX manual... this works well.

2) For sequential mode: I solve for the embedded gaussian beam and M^2 per Siegman to get the basic propagation characteristics.

1) is better for imaging etc. you can see the array on the detector.
2) is better for propagating the total beam as a single beam... IE. for free-space illumination.

Regards and greetings from Seattle...

Parry Johnson

[Phil Hobbs]

On 9/18/2013 8:36 PM, parryjoh

ns...@gmail.com wrote:
> On Monday, October 1, 2001 2:30:37 AM UTC-7, Sven Voigt wrote:
>> Hello world!
>>
>> I am trying to design an optical system that uses a VCSEL array as
>> light source. As I am yet very new to ZEMAX I couldn't find an
>> apporpriate way of simulating VCSELs. The problem is their flat
>> extension with a given cone angle.
>>
>> Having tried the field feature and NSC, nothing satisfied our needs.
>> The NSC Source Ellipse in particular has no angle limitation.
>>
>> If anybody could please hint me to any web source or show up with a
>> ZEMAX solution, I'd be very thankful! :-)
>>

<snip>

> Hi Sven,
>
> I do this two ways: 1) Non-sequential mode, and 2)sequential mode. I
think you want to consider non-sequential.
>
> 1) For non-sequential mode: I do this trick... that is not perfect
but close enough. I use the "source diode" and let the VCSEL be
described as an array of square emitters without astigmatism. Input the
FWHM per the ZEMAX manual... this works well.
>
> 2) For sequential mode: I solve for the embedded gaussian beam and
M^2 per Siegman to get the basic propagation characteristics.
>
> 1) is better for imaging etc. you can see the array on the detector.
> 2) is better for propagating the total beam as a single beam... IE.
for free-space illumination.
>
> Regards and greetings from Seattle...
>
> Parry Johnson

Hi, Parry,

Welcome to sci.optics, and to Usenet in general. You seem to be new
here, since you apparently didn't realize that you were replying to a
post that's almost a dozen years old. We're glad you stopped by.

A couple of things:

1. Usenet is much older than Google--see e.g.
https://en.wikipedia.org/wiki/Usenet

2. It's customary to append your reply to the bottom of an
appropriately-snipped history, like this. (I reformatted your post in
the usual Usenet style.) This isn't arbitrary--people read Usenet
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Live long and post often. ;)

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

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