Tomography apparatus

A tomography apparatus for acquiring a tomographic image of a sample containing at least one of a fluorescent dye and a fluorescent pigment, comprising:

• a light-source unit which emits low-coherence laser light;
• an optical splitting unit which splits said low-coherence laser light into measurement light and reference light;
• a frequency modulation unit which make a first frequency of said reference light slightly different from a second frequency of reflected light generated by reflection of said measurement light by said sample;
• an optical combining unit which optically combines said reference light with said reflected light;
• an interference-light detection unit which detects interference light generated by interference of said reference light with said reflected light when the reference light is combined by said optical combining unit with the reflected light;
• a fluorescence detection unit which detects fluorescence emitted by excitation of said fluorescent dye said sample when the sample is irradiated with said measurement light;
• and
• an image acquisition unit which acquires a first tomographic image of said sample formed by said interference light detected by said interference-light detection unit, and a second tomographic image of the sample formed by said fluorescence detected by said fluorescence detection unit.