Polarization Spectrum of Near-Infrared Zodiacal Light Observed with CIBER

We report the first measurement of zodiacal light (ZL) polarization spectrum in near-infrared between 0.8 and 1.8 $\mu$m. Using low-resolution spectrometer (LRS) on board Cosmic Infrared Background Experiment (CIBER), calibrated for absolute spectrophotometry spectropolarimetry, we acquire long-slit spectral images total diffuse sky brightness towards five fields. To extract ZL spectrum, subtract contribution other radiation, such as galactic (DGL), integrated star (ISL), extragalactic background (EBL). The measured shows little wavelength dependence degree clearly varies a function ecliptic coordinates solar elongation. Among observed fields, North Ecliptic Pole maximum $\sim$ 20$\%$, which is consistent with an earlier observation from Diffuse (DIRBE) aboard Explorer (COBE). its elongation are reproduced by empirical scattering model visible band also Mie large absorptive particles, while Rayleigh ruled out. All our results suggest that interplanetary dust dominated particles.