Acta Optica Sinica, Volume. 20, Issue 9, 1272(2000)
Nonuniform Reflection Volume Holographic Notch Filter
On the basis of experiments,the nonuniform models of modulation of refraction index and variation of spatial frequency are obtained by using nonuniform coupled-wave theory.The nonuniform distribution characteristics of the filters having high diffraction efficiency and narrow bandwidth are analyzed on the nonuniform model,and a method for improving properties of notch filter is proposed.The holographic notch filters with high optical density and narrow bandwidth are fabricated using dichromated gelatin ;DCG .The characteristics of these filters are that the optical density of peak wavelength is between 4 and 5,and the half-bandwidth is smaller than 20 nm.
Get Citation
Copy Citation Text
[in Chinese], [in Chinese], [in Chinese], [in Chinese]. Nonuniform Reflection Volume Holographic Notch Filter[J]. Acta Optica Sinica, 2000, 20(9): 1272