公开(公告)号：JPH11230907A

公开(公告)日：1999-08-27

申请号：JP2936298

申请日：1998-02-12

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TANI TOSHIAKI ,  MARTIN BACH ,  YOKOYAMA HIROSHI

IPC: G01N21/64 ,  G01J3/28 ,  G02B3/00 ,  G02B21/00 ,  G02B21/36

Abstract: PROBLEM TO BE SOLVED: To provide an infinitestimal microscope spectroscopic apparatus which is simple, in which few adjusting parts are provided, which is operated stably and which is extremely small. SOLUTION: An infinitestimal microscope spectroscopic apparatus is an optical apparatus which measures a spectrum on the basis of the emission spectroscopic operation, the scattering spectroscopic operation or the like of an infinitestimal structure such as a single molecule, a single quantum point/quantum line, a cluster/an association body or the like as a sample 3 to be measured. In the optical apparatus, a rod-shaped lens 1 having an inclined refractive-index distribution is used as a signal-light condensing optical system, the end face, on one side, of the rod-shaped lens 1 is used as a transparent substrate on which the sample 3 to be measured is placed, and laser light is made incident on the other end of the rod-shaped lens 1 so as to be condensed on the end face, on one side, of the rod-shaped lens 1. When the laser light for excitation is made incident from the face of the rod-shaped lens 1 which is used directly as the substrate for the sample 3 and from the end face on the opposite side, and a beam waist region in which the light is condensed in the boundary region between the sample 3 and the end face is used as a very small space.