  Cuprate superconductor Bi2Sr2CaCu2O8+{\delta} (BSCCO) has been a promising
candidate of a coherent, continuous, and compact THz light source owing to its
intrinsic Josephson junction inside the crystal structure. In this paper, we
utilized BSCCO cross-whisker junctions to produce THz emitter device using the
whisker crystals which can be easily obtained compared with single crystals. As
a result, we have successfully observed the emission from the cross-whisker
intrinsic Josephson junction, with frequency of ~0.7 THz. Our findings might
enlarge the applicability of BSCCO superconductors for the THz emission source.
