![\"\"](\"https:\/\/www.ltb-berlin.de\/en\/wp-content\/uploads\/2025\/01\/ELIAS-1024x577_en.png\")
<\/figure>\n<\/div>\n\n\nThe use of a 360 mm wide echelle grating within a Littrow arrangement allows a single, double or even quadruple pass, depending on the ELIAS version. This allows either extremely precise line characterisation with extremely high resolution or a larger inspection area analysis with reduced resolution and higher sensitivity. A camera focal length of 10 m is achieved with a 2.5 m offaxis paraboloid mirror and downstream anamorphic magnification optics with a tangential reproduction scale of 4:1.<\/p>\n\n\n\n
The ELIAS spectrometers are thermally and mechanically extremely stable and have fully motorised optomechanics for automatic focusing and alignment of the spectrum to the detector. Chromatic aberrations are avoided by using reflective optics with broadband UV coatings. The radiation is coupled into the spectrometer via an SMA fiber or pure reflection transfer optics.<\/p>\n\n\n\n
With the supplied Sophi software, all functions of the spectrometer-detector unit are controlled via an intuitive graphical user interface. A scan measurement mode enables the sequential measurement of a larger wavelength range than the spectrometer’s free spectral range. An optional LabVIEW library enables complete remote control of the ELIAS and thus integration into complex test stations.<\/p>\n\n\n\n
<\/figure>\n<\/div>\n\n\nThe optical design of all models in the ELIAS series is identical to the standard ELIAS I version.<\/p>\n\n\n\n
- \n
- ELIAS I: <\/strong>Standard model of the ELIAS series.<\/li>\n\n\n\n
- ELIAS II: <\/strong>ELIAS model with a significantly higher spectral resolution, fast shutter and high-resolution, more strongly cooled detector system for improved time-resolved measurements with a higher signal-to-noise ratio.<\/li>\n\n\n\n
- ELIAS III: <\/strong>Further development of the ELIAS II with integrated reflector, which enables fourfold utilisation of the echelle grating and thus a doubling of the spectral resolution of an ELIAS II.<\/li>\n\n\n\n
- ELIAS LD: <\/strong>Low Dispersion ELIAS model in which the half-widths of the lines are no longer resolved with 5 to 10 pixels. The free spectral range can thus be more than tripled without significantly reducing the spectral resolution compared to the ELIAS I.<\/li>\n\n\n\n
- WAVEMETER: <\/strong>ELIAS I model for determining the absolute wavelength, for example 193 nm.<\/li>\n<\/ul>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
The ELIAS Emission Line Analysing Spectrometer models belong to a worldwide unique monochromator series, with which a spectrally high-resolution quantitative measurement of narrowband laser lines with an intensity dynamic range of up to four orders of magnitude is possible. By using a CCD camera with a signal-to-noise ratio of up to 40,000, the line profiles […]<\/p>\n","protected":false},"featured_media":1029,"template":"","meta":{"footnotes":""},"produkt_kategorie":[23],"class_list":["post-1019","produkte","type-produkte","status-publish","has-post-thumbnail","hentry","produkt_kategorie-monochromators"],"_links":{"self":[{"href":"https:\/\/www.ltb-berlin.de\/en\/wp-json\/wp\/v2\/produkte\/1019","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ltb-berlin.de\/en\/wp-json\/wp\/v2\/produkte"}],"about":[{"href":"https:\/\/www.ltb-berlin.de\/en\/wp-json\/wp\/v2\/types\/produkte"}],"version-history":[{"count":8,"href":"https:\/\/www.ltb-berlin.de\/en\/wp-json\/wp\/v2\/produkte\/1019\/revisions"}],"predecessor-version":[{"id":2073,"href":"https:\/\/www.ltb-berlin.de\/en\/wp-json\/wp\/v2\/produkte\/1019\/revisions\/2073"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ltb-berlin.de\/en\/wp-json\/wp\/v2\/media\/1029"}],"wp:attachment":[{"href":"https:\/\/www.ltb-berlin.de\/en\/wp-json\/wp\/v2\/media?parent=1019"}],"wp:term":[{"taxonomy":"produkt_kategorie","embeddable":true,"href":"https:\/\/www.ltb-berlin.de\/en\/wp-json\/wp\/v2\/produkt_kategorie?post=1019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- ELIAS II: <\/strong>ELIAS model with a significantly higher spectral resolution, fast shutter and high-resolution, more strongly cooled detector system for improved time-resolved measurements with a higher signal-to-noise ratio.<\/li>\n\n\n\n