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TT5310金蟲 (正式寫手)
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[交流]
【求助】光程與波長的關(guān)系
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| 問下光入射到介質(zhì)中的最大深度與波長有什么關(guān)系呢,謝謝了 |

金蟲 (正式寫手)

銀蟲 (小有名氣)

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it depends on the optical absorption coefficient of a material. suppose that the refraction index of a material is: n=x+iu (complex number) and the light speed in this material is: v=c/n c: light speed you can get light intensity in this material: I=I0*exp(-a*y) I0: incident light intensity I: light intensity at position y inside the material, with: a=4*pi*u/lambda a:absorption coefficient generally, when y=a, the y is called the penetration depth of the light for this material it is the quantity you ask for [ Last edited by bote on 2009-9-8 at 11:36 ] |
金蟲 (小有名氣)
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