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Tiny laser: Big challenge

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Marie Freebody, [email protected]

Since the invention of lasers 50 years ago, some scientists have worked to make the new versions bigger and more powerful, while others have been in pursuit of smaller and more efficient models. Now, a group of scientists at Harvard University and Georgia Institute of Technology in Atlanta believe it has taken an important step toward creating an ultrasmall laser with what it claims is the largest spontaneous emission factor reported to date. The hope for nanometer-scale lasers is that they will lead to the realization of compact on-chip photonic circuits. Such all-optical devices could...Read full article

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    Published: November 2010
    Glossary
    indium phosphide
    Indium phosphide (InP) is a compound semiconductor material composed of indium (In) and phosphorus (P). It belongs to the III-V group of semiconductors, where elements from groups III and V of the periodic table combine to form a variety of important semiconductor materials. Indium phosphide is known for its favorable electronic and optical properties, making it widely used in the fabrication of optoelectronic devices. Key features and properties of indium phosphide include: Bandgap: Indium...
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    all-opticalApplied Physics Letterselectronic circuitsGeorgia Institute of TechnologyHarvard UniversityInAlGaAsindium phosphideindustrialInGaAsInPMarie Freebodynanonanobeamnanolaseron-chip photonic circuitsOpticsphotonic crystalphotonic integrated circuitspower thresholdquantum wellsResearch & Technologysemiconductorsspontaneous emission factorTech PulseYinan ZhangZhang

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