We have developed a laser flash apparatus for simultaneous measurements of thermal diffusivity and specific heat capacity
of solid materials by introducing recent technical progress: uniform heating by a homogenized laser beam using an optical
fiber with a mode mixer, measuring transient temperature of a specimen with a calibrated radiation thermometer, analyzing
a transient temperature curve with a curve fitting method, to achieve differential laser flash calorimetry. Thermal diffusivity,
specific heat capacity and thermal conductivity of glassy carbon and molybdenum were measured in the temperature range from
300 to 1100 K.