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US 10,381,795 B2Granted
Unidirectionally emitting microdisk having ultra-high quality factor and laser using the same
AssigneeDaegu Gyeongbuk Institute of Science and Technology
InventorChil Min Kim
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Abstract
The present invention relates to a microdisk laser having characteristics of unidirectional emission and an ultra-high quality factor and also a microdisk laser composed of four circular arcs and configured to emit light in one direction in a resonance mode having the form of a whispering gallery mode formed by total reflection.
Claims16
A microdisk for forming a high quality factor resonance mode in a chaotic resonator, the microdisk comprising:
- a first arc having a first radius R1;
- third and fourth arcs directly and tangentially connected to both ends of the first arc;
- and
- a second arc having a second radius R2 greater than the first radius R1 and tangentially connected to the third and fourth arcs,
- wherein the first, second, third, and fourth arcs are each a circular arc,
- wherein when the third arc has a third radius R3 and the fourth arc has a fourth radius R4, the third radius and the fourth radius are smaller than the first radius.
3 more elements
A microdisk laser comprising:
- a power supply unit;
- a microdisk having a first arc having a first radius R1, third and fourth arcs directly and tangentially connected to both ends of the first arc, and a second arc having a second radius R2 greater than the first radius R1 and tangentially connected to the third and fourth arcs;
- and
- an electrode formed by coating an upper surface of the microdisk with metal and configured to supply electric current,
- wherein the first, second, third, and fourth arcs are each a circular arc,
- wherein when the third arc has a third radius R3 and the fourth arc has a fourth radius R4, the third radius and the fourth radius are smaller than the first radius.
3 more elements
A microdisk laser comprising:
- a microdisk having a first arc having a first radius R1, third and fourth arcs directly and tangentially connected to both ends of the first arc, and a second arc having a second radius R2 greater than the first radius R1 and tangentially connected to the third and fourth arcs;
- and
- a light supply unit configured to supply light to the microdisk to excite the microdisk,
- wherein the second radius R2 is infinite so that the second arc becomes a straight line,
- wherein when the third arc has a third radius R3 and the fourth arc has a fourth radius R4, the third radius and the fourth radius are smaller than the first radius.
2 more elements
Dependencies are inferred from the claim text.