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We present the first multi-wavelength (near-infrared; $1.1 - 2.4$ $\mu m$)imaging of HD 36546's debris disk, using the Subaru Coronagraphic ExtremeAdaptive Optics (SCExAO) system coupled with the Coronagraphic High AngularResolution Imaging Spectrograph (CHARIS). As a 3-10 Myr old star, HD 36546presents a rare opportunity to study a debris disk at very early stages.SCExAO/CHARIS imagery resolves the disk over angular separations of $\rho \sim0.25" - 1.0"$ (projected separations of $\rm{r_{proj}} \sim 25 - 101$$\rm{au}$) and enables the first spectrophotometric analysis of the disk. Thedisk's brightness appears symmetric between its eastern and western extents andit exhibits slightly blue near-infrared colors on average (e.g. $J-K=-0.4\pm0.1$) $-$ suggesting copious sub-micron sized or highly porous grains.Through detailed modeling adopting a Hong scattering phase function (SPF),instead of the more common Henyey-Greenstein function, and using thedifferential evolution optimization algorithm, we provide an updated schematicof HD 36546's disk. The disk has a shallow radial dust density profile($\alpha_{in} \approx 1.0$ and $\alpha_{out} \approx -1.5$), a fiducial radiusof $r_0 \approx 82.7$ au, an inclination of $i \approx 79.1^\circ$, and aposition angle of $\rm PA \approx 80.1^\circ$. Through spine tracing, we find aspine that is consistent with our modeling, but also with a "swept-back wing"geometry. Finally, we provide constraints on companions, including limiting acompanion responsible for a marginal Hipparcos-Gaia acceleration to a projectedseparation of $\lesssim 0.2''$ and to a minimum mass of $\lesssim 11$ $\rmM_{Jup}$.

Multiband imaging of the HD 36546 debris disk: a refined view from SCExAO/CHARIS