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Estimate the relative change in output wavelength arising from a refractive index change of one part...

Estimate the relative change in output wavelength arising from a refractive index change of one part in 107 in a cleaved facet diode laser 1 mm long.

Science   Advanced-Physics   
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I am sorry I'm unable to understand if n' =107 n or n' =1/107 n . We just have to put that accordingly and we'll get the desired result. Hope you find it helpful. Thank you.

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