Solid state transducer devices with separately controlled regions, and associated systems and methods
Solid state transducer devices with independently controlled regions, and associated systems and methods are disclosed. A solid state transducer device in accordance with a particular embodiment includes a transducer structure having a first semiconductor material, a second semiconductor material and an active region between the first and second semiconductor materials, the active region including a continuous portion having a first region and a second region. A first contact is electrically connected to the first semiconductor material to direct a first electrical input to the first region along a first path, and a second contact electrically spaced apart from the first contact and connected to the first semiconductor material to direct a second electrical input to the second region along a second path different than the first path. A third electrical contact is electrically connected to the second semiconductor material.
1. A method for operating a solid state transducer, comprising:
directing a first electrical input to a first region of a solid state transducer at a first power; and
directing no electrical input or a second electrical input to a second region of the solid state transducer concurrently with the first electrical input, the second electrical input being at a second power different than the first power, wherein the first and second regions of the solid state transducer together form a physically continuous active region of the solid state transducer, wherein the physically continuous active region of the solid state transducer comprises a single monolithic layer of material including multiple quantum wells.
2. The method of claim 1 , further comprising:
receiving an input corresponding to an operational characteristic of at least one of the first and second regions; and
based at least in part on the input, changing a value of at least one of the first and second powers.
3. The method of claim 2 wherein the input corresponds to a characteristic of light emitted by the active region.
4. The method of claim 2 wherein the input corresponds to a characteristic of heat emitted by the active region.
5. The method of claim 1 wherein directing the first and second electrical inputs includes directing the first and second electrical inputs to first and second regions of a single LED die.
6. The method of claim 1 wherein the first and second regions produce red light and wherein directing no electrical input or a second electrical input to a second region of the solid state transducer includes directing no electrical input while a light output from the first region is decreasing.
7. The method of claim 1 , further comprising coupling a controller to the solid state transducer to control delivery of the first and second electrical inputs.
8. The method of claim 7 , further comprising:
coupling a detector to the controller; and
programming the controller to direct the first and second electrical inputs at least in part in response to a signal received from the detector, the signal corresponding to a characteristic of an output from the solid state transducer.