Laser Device and Lasing Method
AssigneeJapan Science and Technology Agency
InventorsTadashi Itoh, Masaaki Ashida
Life of this patent
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Abstract
A laser device which causes lasing with a use of a semiconductor quantum dot is provided with: a laser member (11) in which the semiconductor quantum dot is formed; a resonator (14) for resonating light generated in the laser member (11); and a pump laser (15) for irradiating the laser member (11) with excitation light whose energy corresponds to two-photon resonant excitation, so as to form a biexciton state in the semiconductor quantum dot by the two-photon resonant excitation. In this way, a laser device which enables lasing using efficient light emission is realized.
Claims9
A laser device for causing lasing by using a semiconductor quantum dot, comprising
- a laser member in which said semiconductor quantum dot is formed;
- a resonating section for resonating light generated in the laser member;
- and
- an excitation light source section for irradiating the laser member with excitation light whose energy corresponds to two-photon resonant excitation, so as to form a biexciton state in the semiconductor quantum dot by the two-photon resonant excitation.
A lasing method which causes lasing by using a semiconductor quantum dot, comprising the step of:
- forming a biexciton state in the semiconductor quantum dot by two-photon resonant excitation, so as to cause lasing by inducing light emission from the semiconductor quantum dot.
Dependencies are inferred from the claim text.