  We present the stellar population and ionized-gas outflow properties of
ultra-luminous IR galaxies (ULIRGs) at $z=$ 0.1-1.0, which are selected from
AKARI FIR all-sky survey. We construct a catalog of 1077 ULIRGs to examine
feedback effect after major mergers. 202 out of the 1077 ULIRGs are
spectroscopically identified by SDSS and Subaru/FOCAS observations. Thanks to
deeper depth and higher resolution of AKARI compared to the previous IRAS
survey, and reliable identification from WISE MIR pointing, the sample is
unique in identifying optically-faint (i$\sim$20) IR-bright galaxies, which
could be missed in previous surveys. A self-consistent spectrum-SED
decomposition method, which constrains stellar population properties in SED
modeling based on spectral fitting results, has been employed for 149 ULIRGs
whose optical continua are dominated by host galaxies. They are massive
galaxies ($M_{\rm star}\sim10^{11}$-$10^{12}$ M$_{\odot}$), associated with
intense star formation activities (SFR $\sim$ 200-2000 M$_{\odot}$ yr$^{-1}$).
The sample covers a range of AGN bolometric luminosity of $10^{10}$-$10^{13}$
L$_{\odot}$, and the outflow velocity measured from [OIII] 5007A line shows a
correlation with AGN luminosity. Eight galaxies show extremely fast outflows
with velocity up to 1500-2000 km s$^{-1}$. However, the co-existence of
vigorous starbursts and strong outflows suggests the star formation has not
been quenched during the ULIRG phase. By deriving stellar mass and mass
fraction of young stellar population, we find no significant discrepancies
between stellar properties of ULIRGs with weak and powerful AGNs. The results
are not consistent with the merger-induced evolutionary scenario, which
predicts that SF-dominated ULIRGs show smaller stellar mass and younger stellar
populations compared to AGN-dominated ULIRGs.
