A measurement apparatus is configured to measure a spectroscopic characteristic of a specimen. The measurement apparatus includes a light source (100) configured to generate light to be irradiated onto the specimen, an ultrasound generating unit (5b) configured to generate an ultrasound, an ultrasound focusing unit (5b) configured to focus the ultrasound generated by the ultrasound generating unit on a measurement area of the specimen, alightdetectingunit (400) configuredtodetect modulated light derived from the light by an acoustooptical effect on the measurement area of the specimen, and a control unit (600) configured to control, based on an output of the light detecting unit, at least one of an intensity and a frequency of the ultrasound generated by the ultrasound generating unit, an ultrasound focusing size (Dl, D2) made by the ultrasound focusing unit, and an intensity of the light generated from the light source.
