ALPS Poster Session 1

[ALPSp1-18] Group refractive index measurement of glass samples using fiber-based supercontinuum laser

Ryo Kurihara¹, *Hiroki Morita¹, Kento Kowa², Yoshitomo Nakashima², Hiroyuki Kowa², Naoji Oya², Takeshi Higashiguchi¹ (1. Utsunomiya University, 2. Trioptics Japan Co,.Ltd.)

The refractive index of glass samples is an important parameter for designing optical devices. Here, we have developed the low-coherence interferometer using a supercontinuum laser, and measured the group refractive indices of a glass sample at 10 wavelengths in visible range. The results show a good agreement with the minimum deviation method within an uncertainty of 10-4. This method allows us to measure the refractive indices speedy and precisely.