I am using a sample of Optiwave “Yb Doped Fiber Laser”.
Attached is a screenshot.
My question is:
There is a pumping source (970nm and 2W) that directs the light through a “Reflector Bidirectional” into the “Yb Doped Fiber”.
I tried to display the output wavelength after laser light exiting the second “Reflector Bidirectional” and I can just display the noise spectrum (green color).
Why is the output wavelength (blue color) unchanged?
The output wavelength is the same that is pumped in, why cannot I visualize the output of the laser spectrum? I think it is not realistic that the same wavelength pumped in is the same that comes out, since there must be an interaction with the yb doped fiber….
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