  A {\gamma}-{\gamma} collider has long been considered an option for a Higgs
Factory. Such photon colliders usually rely on Compton back-scattering for
generating high energy {\gamma} photons and further Higgs bosons through
{\gamma}-{\gamma} collisions. The presently existing proposals or design
concepts all have chosen a very thick laser target (i.e., high laser photon
intensity) for Compton scatterings. In this paper, we present a new design
concept of a {\gamma}-{\gamma} collider utilizing a thin laser target (i.e.,
relatively low photon density), thus leading to a low electron to {\gamma}
photon conversion rate. This new concept eliminates most useless and harmful
soft {\gamma} photons from multiple Compton scattering so the detector
background is improved. It also greatly relaxes the requirement of the high
peak power of the laser, a significant technical challenge. A high luminosity
for such a {\gamma}-{\gamma} collider can be achieved through an increase of
the bunch repetition rate and current of the driven electron beam. Further, a
multi-pass recirculating linac could greatly reduce the linac cost and energy
recovery is required to reduce the needed RF power.
