Laser Device and Method for its Operation
AssigneeThe University Court of the University of Glasgow
InventorsRichard Hogg, David Childs, Richard Taylor
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Abstract
A laser device has a photonic crystal surface emitting laser (PCSEL) element. At a first lateral side of the PCSEL element, a reflector is arranged to reflect back into the PCSEL element at least a portion of light travelling out of the PCSEL element through the first lateral side of the PCSEL element. Between the first lateral side of the PCSEL element and the reflector there is interposed an electrically controllable light-transmission region configured to control the transmission of light from the PCSEL element to the reflector, based on an electrical input. Also disclosed is a method of operation of a corresponding laser device.
Claims16
A laser device having:
- a photonic crystal surface emitting laser (PCSEL) element, there being provided at least at a first lateral side of the PCSEL element a reflector arranged to reflect back into the PCSEL element at least a portion of light travelling out of the PCSEL element through the first lateral side of the PCSEL element, there being interposed between the first lateral side of the PCSEL element and the reflector an electrically controllable light-transmission region configured to control the transmission of light from the PCSEL element to the reflector, based on an electrical input.
A method for operating a laser device, the laser device having a photonic crystal surface emitting laser (PCSEL) element, the method including the step of controlling the reflection of light, travelling out of the PCSEL element through a first lateral side of the PCSEL element, back into the PCSEL element, by causing an electrical input to control the transmission of light through a light-transmission region interposed between the first lateral side of the PCSEL element and a reflector.
A laser device having:
- a PCSEL element, wherein respective reflectors are provided at least at a first lateral side of the PCSEL element and at a second lateral side of the PCSEL element, each respectively arranged to reflect back into the PCSEL element at least a portion of light travelling out of the PCSEL element through the respective lateral sides of the PCSEL element, wherein the respective reflectors are wavelength-selective.
A method for operating a laser device, the laser device having a photonic crystal surface emitting laser (PCSEL) element, wherein respective wavelength-selective reflectors are provided at least at a first lateral side of the PCSEL element and at a second lateral side of the PCSEL element, the method including the step of emitting light from the PCSEL element through the respective lateral sides of the PCSEL element, the reflectors each respectively being arranged to reflect at least a portion of the light travelling out of the PCSEL element through the respective lateral sides of the PCSEL element, back into the PCSEL element.
Dependencies are inferred from the claim text.