THREE-DIMENSIONAL SPACE-RESOLUTION AND TIME-RESOLUTION SPECTRUM MEASURING INSTRUMENT

摘要

PURPOSE:To enable the three-dimensional space-resolution measurement of light excited absorption by laser light by making pinhole exciting light incident in the same direction with or opposite direction from the optical path direction of pinhole monitor light. CONSTITUTION:Light from a pinhole monitor light source is made incident on samples (a) and (b) through a condenser lens to travel to a pinhole and a detector through an objective. Further, light from a pinhole exciting light source, on the other hand, is made incident on the samples (a) and (b) through a dichroic mirror and the objective to excite the samples (a) and (b). The detector observes the absorption by the light excitation through the pinhole. In this constitution, when the samples (a) and (b) are compared, the sample (a) is higher in the density of molecules excited with the exciting light, but small in area. The monitor light passes through only an area which is excited, so the absorbance is larger at a position (a), so the signal intensity becomes smaller. In this principle, depth-directional information on the samples (a) and (b) can be observed. Namely, the three-dimensional space-resolution spactrum measurement becomes possible.