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What's the best broadband collimated light source? Answered

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I am measuring the transmittance of different glass samples using integrated sphere and a radio spectrometer.... the light source that I am using currently is a Halogen car head light... but it is neither collimated nor bright enough..... 

Could you please suggest what light source shell I be using...
Moreover could you please have a look at the pic attached and suggest any improvements in my method of transmittance measurement..

I'll be very thankful to you for any assistance in this regard.

Kind Regards

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user
steveastrouk (author)2012-07-02

I'd use an reflector, to preserve as much IR and UV from the source as possible -assuming you're trying for the widest possible bandwidth.

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raishikoh (author)steveastrouk2012-07-03

Thanks for the reply

I just wanna ask if you had done some work related to transmittance measurements in the integrated sphere.
Currently I am measuring the transmittance of different glass samples (UV reflector, structured glass e.t.c). I am having a real tough time. Would you please guide me through the process that's needed to measure the transmittance.

What light source shell I be using? The one that I am using currently is not a good one I am not able to measure anything.

I'll be really thankful to you for this favour. Thanks

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steveastrouk (author)raishikoh2012-07-03

Show me your optical bench setup. What wavelengths are you testing over ?

What do you mean by "can't measure anything" ? Do you mean you can't see any difference in the sample data ? Or you can't GET any sample data ?What is the detector on the sphere ? PMT or photodiode or what ?

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steveastrouk (author)2012-07-02

Where's the sample relative to the integraTING sphere ?

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