Fiber-Coupled Solid State Microcavity Light Emitters
First Claim
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1. An optical device, comprising:
- a microcavity light emitter comprising a semiconductor quantum dot structure that absorbs excitation energy and emits laser light;
a single-mode fiber comprising a thinned taper section between first and second single-mode fiber sections and being located near the microcavity light emitter in optical evanescent coupling with the microcavity light emitter to couple a portion of the laser light out of the microcavity light emitter into at least one of the first and second single-mode fiber sections as an output of the microcavity light emitter; and
a movable stage on which the microcavity light emitter is mounted, the movable stage being adjustable in position to control a position of the microcavity light emitter relative to be in optical evanescent coupling with the taper section.
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Abstract
Designs of fiber-coupled solid state microcavity light emitters based on microdisk cavities, photonic crystal cavities and other microcavity configurations to provide efficient optical coupling.
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Citations
20 Claims
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1. An optical device, comprising:
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a microcavity light emitter comprising a semiconductor quantum dot structure that absorbs excitation energy and emits laser light;
a single-mode fiber comprising a thinned taper section between first and second single-mode fiber sections and being located near the microcavity light emitter in optical evanescent coupling with the microcavity light emitter to couple a portion of the laser light out of the microcavity light emitter into at least one of the first and second single-mode fiber sections as an output of the microcavity light emitter; and
a movable stage on which the microcavity light emitter is mounted, the movable stage being adjustable in position to control a position of the microcavity light emitter relative to be in optical evanescent coupling with the taper section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An optical device, comprising:
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a device mount;
a microcavity light emitter comprising a semiconductor quantum dot structure that absorbs excitation energy and emits laser light;
a first positioning stage engaged on the device mount to hold the microcavity light emitter, the first positioning stage to adjust a position of the light emitter on the device mount;
a single-mode fiber comprising a thinned taper section between first and second single-mode fiber sections and being located near the microcavity light emitter in optical evanescent coupling with the microcavity light emitter to couple a portion of the laser light out of the microcavity light emitter into at least one of the first and second single-mode fiber sections as an output of the microcavity light emitter;
a fiber holding substrate to which the first and second single-mode fiber sections are engaged in a way to bend the thinned taper section under a tension and the center of the thinned taper section is positioned near the microcavity light emitter to evanescently couple with the microcavity light emitter;
a second positioning stage on which the fiber holding substrate is mounted, the second positioning stage being adjustable in position to control a position of the fiber holding substrate on the device mount;
a cryostat unit to provide cooling; and
at least one thermal conductor connected between the microcavity light emitter and the cryostat unit which cools the microcavity light emitter to place the semiconductor quantum dot structure at a cryogenic temperature. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An optical device, comprising:
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a substrate;
an array of microcavity light emitters monolithically formed on the substrate, each comprising a semiconductor quantum dot structure that absorbs excitation energy and emits laser light; and
at least one single-mode fiber comprising a thinned taper section between first and second single-mode fiber sections and being located near the microcavity light emitter in optical evanescent coupling with at least one microcavity light emitter to couple a portion of the laser light out of the microcavity light emitter into at least one of the first and second single-mode fiber sections as an output of the microcavity light emitter.
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Specification