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 fourier transform spectrum of emission spectum		  New Topic  Reply to Topic
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paperwhite

Japan
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Posted - 10/25/2007 :  04:00:44 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
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dear all, a question for your kind help. I take up material science research, laser materials to be detail. Now hope to otbain the power fourier transform spectrum of the laser emission spectrum in order to analyze the information on oscillation cavity. will you please give me some suggestions?
PS: my knowledge is only that the unit of x-axis in the emission spectrum should be transferred to the inverse of length unit (e.g. cm-1 or um-1), but I have no idea of the following steps.

Mike Buess

USA
3037 Posts
Posted - 10/25/2007 :  12:29:56 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
See Analysis: Advanced Math...> Fast Fourier Transform (FFT) in the Origin reference (Help> Origin). For power spectrum choose Spectrum = Power on the Operation tab of the FFT dialog. See the Origin and FFT section of the reference for the effects of sampling. (For best results the number of data points should be a power of two.)

Mike Buess
Origin WebRing Member
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paperwhite

Japan
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Posted - 10/29/2007 :  10:12:05 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
dear Mike Buess, thank you so much, I have made it.
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