LASER DEVICE.
    53.
    发明专利

    公开(公告)号:NL2003777A

    公开(公告)日:2010-07-13

    申请号:NL2003777

    申请日:2009-11-10

    Abstract: A laser device includes a seed laser, an amplifier, a detector, and an optical element arranged to direct radiation emitted by the seed laser towards a plasma generation site. The optical element is arranged to direct towards the detector amplified spontaneous emission radiation which has been emitted by the seed laser and has been reflected from a droplet of fuel material. The detector is arranged to trigger generation of a laser radiation pulse by the seed laser when the reflected amplified spontaneous emission radiation is detected.

    SPECTRAL PURITY FILTER
    58.
    发明专利

    公开(公告)号:SG184557A1

    公开(公告)日:2012-11-29

    申请号:SG2012075628

    申请日:2011-02-22

    Abstract: A spectral purity filter includes a body of material, through which a plurality of apertures extend. The apertures are arranged to suppress radiation having a first wavelength and to allow at least a portion of radiation having a second wavelength to be transmitted through the apertures. The second wavelength of radiation is shorter than the first wavelength of radiation. The body of material is formed from a material having a bulk reflectance of substantially greater than or equal to 70% at the first wavelength of radiation. The material has a melting point above 1000 °C.

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