Patent ID: 11909164
Assignee: NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 4:
5. A light detection device comprising the optical pulse pair generator of claim 1 and configured to perform light detection using an excitation pulse beam, a first probe pulse beam, and a second probe pulse beam, wherein the first pulse beam configures the first probe pulse beam, the light detection device further comprising:
a laser light source configured to generate a light source pulse beam;
a light source splitter section configured to split the light source pulse beam in two by splitting into the excitation pulse beam and the incident pulse beam;
a modulation section configured to phase modulate the second pulse beam so as to configure the second probe pulse beam;
a multiplexing section configured to multiplex the excitation pulse beam, the first probe pulse beam, and the second probe pulse beam so as to generate a multiplexed beam;
an illumination section configured to illuminate a sample with the multiplexed beam; and
a detection section configured to employ heterodyne interference due to the first probe pulse beam and the second probe pulse beam to detect a molecular vibration excited by the excitation pulse beam when the multiplexed beam is illuminating the sample.