H. Ooki et al., LASER-SCANNING MODE INTERFERENCE CONTRAST MICROSCOPE AND ITS APPLICATION TO STEP HEIGHT MEASUREMENT, JPN J A P 1, 32(11A), 1993, pp. 4998-5001
The image contrast of the laser scanning mode interference contrast (L
ASMIC) microscope is described. Some experimental results show the hig
h performance of the LASMIC microscope in visualizing small phase chan
ges on the surface of the sample. Furthermore, as a new application of
the LASMIC microscope, quantitative measurement of step heights using
LASMIC signals is proposed. The principle of this measurement is desc
ribed theoretically and its effectiveness is verified experimentally.