A Low Oscillation Dispersion Mirror Structure and Its Design Method
A dispersive mirror and low-dispersion technology, which is applied in the field of low-oscillation dispersive mirror structure, can solve the problems of large amount of design engineering and high manufacturing cost
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Embodiment 1
[0031] The low oscillation dispersion mirror index required by Embodiment 1 is: group delay dispersion value -200fs 2 , Reflectivity > 99.8%, corresponding bandwidth is 800nm central wavelength 200nm bandwidth.
[0032] The design steps are as follows:
[0033] 1. According to the group delay dispersion and bandwidth requirements, the amount of dispersion is relatively large and the bandwidth is wide, so the high refractive index material Nb with a high refractive index is selected 2 o 5 , the low refractive index material is SiO 2 , the refractive index parameters of high and low refractive index materials are given by the Cauchy formula Sure.
[0034] 2. According to the requirements of the low-oscillation dispersion mirror, select appropriate parameters and substitute them into the film structure expression G / (HL)^n(HL)^m(HxLH)^k(LxHL)^kM / A of the low-oscillation dispersion mirror, The film structure is obtained as figure 2 mentioned.
[0035]3. Based on the init...
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