Bipolar cascade arrow laser
AssigneeMassachusetts Institute of Technology
InventorsSteven G. Patterson, Rajeev J. Ram
Life of this patent
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Abstract
A bipolar cascade-ARROW laser includes a plurality of core regions, at least one spacer disposed between each the plurality of core regions with each of the at least one spacers provided from a material having an index of refraction which is higher than an index of refraction of a material from which the core regions are provided. The bipolar cascade-ARROW laser further includes an anti-reflector disposed against each of the outermost ones of the core regions and at least one quantum well disposed in each of the plurality of core regions.
Claims20
A bipolar cascade-ARROW laser comprising:
- a plurality of core regions;
- at least one spacer disposed between each core region in the plurality of core regions with each of the at least one spacers being provided as a tunnel junction having a first material having an index of refraction which is higher than an index of refraction of a second material from which the plurality of core regions is provided;
- anti-reflectors disposed against outermost ones of the plurality of core regions;
- and
- at least one quantum well disposed in each of the plurality of core regions.
A method of lasing, comprising:
- providing a plurality of core regions;
- forming at least one spacer disposed between each core region in the plurality of core regions with each of the at least one spacers being provided as a tunnel junction having a first material having an index of refraction which is higher than an index of refraction of a second material from which the plurality of core regions is provided;
- forming anti-reflectors disposed against outermost ones of the plurality of core regions;
- forming at least one quantum well disposed in each of the plurality of core regions so as to form a bipolar cascade ARROW laser;
- and
- energizing the bipolar cascade laser.
Dependencies are inferred from the claim text.