Tunable transverse cavity surface emitting laser
AssigneeUniversity of Florida Research Foundation, Inc.
InventorsHamed Dalir, Elham Heidari, Tongyao Wu
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Abstract
A transverse cavity surface emitting laser (TCSEL) comprising an active cavity comprising a gain factor; a feedback cavity comprising a loss factor; and a coupling channel that transversely couples the active cavity to the feedback cavity, wherein (i) the TCSEL is configured to operate at or near an exceptional point (EP) based on a gain/loss contrast between the active cavity and the feedback cavity, (ii) the gain/loss contrast corresponds to the gain factor and the loss factor, and (iii) a wavelength of a laser emitted from the TCSEL is tunable by tuning the loss factor.
Claims12
A transverse cavity surface emitting laser (TCSEL) comprising:
- an active cavity comprising a gain factor;
- a feedback cavity comprising a loss factor;
- and
- a coupling channel that transversely couples the active cavity to the feedback cavity,
- wherein:
- (i) the TCSEL is configured to operate at or near an exceptional point (EP) based on a gain/loss contrast between the active cavity and the feedback cavity,
- (ii) the gain/loss contrast corresponds to the gain factor and the loss factor, and
- (iii) a wavelength of a laser emitted from the TCSEL is tunable by tuning the loss factor.
A transverse cavity surface emitting laser (TCSEL) comprising:
- an active vertical-cavity surface-emitting laser (VCSEL) cavity comprising a gain medium;
- a slow-light cavity transversely coupled to the active VCSEL cavity;
- and
- a coupling channel connecting the active VCSEL cavity and the slow-light cavity,
- wherein:
- (i) the TCSEL is configured to operate at or near an exceptional point (EP) based on a gain/loss contrast between the active VCSEL cavity and the slow-light cavity,
- (ii) a wavelength of a laser emitted from the TCSEL is tunable based on a nonlinear effect at the EP, and
- (iii) the nonlinear effect comprises a square-root dependency of the wavelength on an induced loss in the slow-light cavity.
Dependencies are inferred from the claim text.