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Waveguide Generates Coherent EUV

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Anne Fischer Lent

Nonlinear optics can convert laser light from one wavelength to another, but the process often requires phase matching to be efficient. Unfortunately, in high-harmonic generation of coherent extreme-ultraviolet radiation, it has not been possible to phase-match above approximately 80 eV, reducing efficiency and limiting its applications. Now researchers from JILA in Boulder, Colo., and Sofia University in Bulgaria have applied concepts from visible light conversion that allow them to extend the range of efficient EUV generation by nearly 100 eV. A modulated fiber enables researchers to...Read full article

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    Published: February 2003
    Glossary
    metrology
    Metrology is the science and practice of measurement. It encompasses the theoretical and practical aspects of measurement, including the development of measurement standards, techniques, and instruments, as well as the application of measurement principles in various fields. The primary objectives of metrology are to ensure accuracy, reliability, and consistency in measurements and to establish traceability to recognized standards. Metrology plays a crucial role in science, industry,...
    nonlinear optics
    Nonlinear optics is a branch of optics that studies the optical phenomena that occur when intense light interacts with a material and induces nonlinear responses. In contrast to linear optics, where the response of a material is directly proportional to the intensity of the incident light, nonlinear optics involves optical effects that are not linearly dependent on the input light intensity. These nonlinear effects become significant at high light intensities, such as those produced by...
    phase matching
    Phase matching is a crucial concept in the field of optics, particularly in nonlinear optics and the generation of coherent light. It refers to the condition where the phases of two or more waves, such as laser beams, are adjusted or aligned in such a way that their combined effect is maximized. In nonlinear optics, various processes involve the interaction of multiple waves within a material. For efficient energy conversion and amplification, it is essential that the phases of these waves...
    wavelength
    Electromagnetic energy is transmitted in the form of a sinusoidal wave. The wavelength is the physical distance covered by one cycle of this wave; it is inversely proportional to frequency.
    industriallaser lightmetrologyMicroscopynonlinear opticsphase matchingResearch & TechnologyTech Pulsewavelength

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