Chinese Optics Letters, Volume. 2, Issue 11, 11670(2004)
Harmonic beam splitter design and fabrication
Two problems of half-wave hole and high ripples in the transmittance region for a harmonic beam splitter had been pointed out and analyzed. Based on the application of a half-wavelength control and a new admittance matching methods, a harmonic beam splitter was designed and fabricated. The former method eliminated the half-wave hole fundamentally, and the latter smoothed high ripples in the transmittance region effectively. The matching stack consisted of a symmetrically periodic structure and provided a complete matching at the desired wavelength, i.e., both conditions for the equivalent admittance and phase thickness were fulfilled. Furthermore, both the theoretical and the tested curves had been given, and a good agreement between them was obtained.
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Xiaofeng Ma, Yingjian Wang, Zhengxiu Fan, Jianda Shao. Harmonic beam splitter design and fabrication[J]. Chinese Optics Letters, 2004, 2(11): 11670