{"id":26832,"date":"2024-07-10T08:23:50","date_gmt":"2024-07-10T06:23:50","guid":{"rendered":"https:\/\/www.linseis.com\/messgeraete\/dil-l75-laser\/"},"modified":"2026-02-26T16:07:49","modified_gmt":"2026-02-26T15:07:49","slug":"dil-l73-laser-dilatometer","status":"publish","type":"messgeraete","link":"https:\/\/www.linseis.com\/en\/instruments\/dilatometer\/dil-l73-laser-dilatometer\/","title":{"rendered":"DIL L73 Laser"},"content":{"rendered":"\t\t
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DIL L73 Laser: High-precision laser dilatometry<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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The LINSEIS DIL L73 laser<\/b>\u00a0is a high-end laser dilatometer for the ultra-precise, non-contact measurement<\/b> of thermal expansion<\/b><\/a> and dimensional changes<\/b>. By using interferometric laser technology with a resolution in the sub-nanometer range (down to 0.3 nm)<\/b>, the system enables absolute length measurements with exceptional accuracy and long-term stability.<\/p>

The DIL L73 laser<\/b> is designed for maximum versatility and enables analysis under vacuum, in inert, reducing or oxidizing atmospheres<\/b> in a wide temperature range from -180 \u00b0C to 1000 \u00b0C<\/b>. Its vertical design, advanced furnace concept and intuitive LINSEIS software ensure reproducible results and ease of use – ideal for research and quality control of ceramics<\/b><\/a>, metals<\/b><\/a>, polymers<\/b><\/a> and composite materials.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Unique features<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Laser interferometry for absolute length measurement<\/b><\/p>

The DIL L73 laser uses a frequency-stabilized helium-neon laser and a homodyne Michelson interferometer to measure absolute length changes without mechanical contact. This results in a resolution of up to 0.3 nm<\/b> and exceptional long-term stability.<\/p>

Non-contact measuring principle<\/b><\/p>

The non-contact laser arrangement eliminates mechanical influences such as friction or hysteresis. This ensures maximum precision<\/b>, even with sensitive, reflective or irregular sample surfaces.<\/p>

Vacuum and pressure-tight measuring chamber<\/b><\/p>

The closed measuring system enables analyses under vacuum, inert, oxidizing, reducing<\/b> or humidified<\/b> conditions – ideal for sensitive or reactive materials.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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High reproducibility and signal stability<\/b><\/p>

Automatic correction algorithms for offset, amplitude and frequency minimize drift and noise and ensure consistent and reproducible measurement results over long periods of time.<\/p>

Vertical design for reliable measuring geometry<\/b><\/p>

The vertical configuration uses gravity as a reference and thus guarantees reproducible contact pressure and stable optical alignment throughout the measurement.<\/p>

Intuitive LINSEIS software platform<\/b><\/p>

The integrated LiEAP software<\/b> combines temperature control, data acquisition and analysis in one platform. It offers automatic calibration, rate-controlled sintering (RCS) and multi-method analysis for DIL, DSC, TGA and STA systems.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Precision without contact <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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The DIL L73 laser enables absolute, non-contact measurement of dimensional changes using laser interferometry.
Its interferometric design eliminates mechanical distortions and ensures extremely stable results even with minimal sample expansion.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Developed for complex materials <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Designed for research and quality control, the DIL L75 laser (DIL L73 laser) enables precise analysis of ceramics, metals, polymers and composites under vacuum, in inert or reactive atmospheres.
Its flexible furnace configurations and stable optical setup ensure reproducible results over a wide temperature range.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Advanced measurement technology architecture <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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The DIL L75 laser (DIL L73 laser) is based on a closed, vibration-stable measuring frame with integrated laser optics.
This design minimizes drift and guarantees a linear signal response – a decisive advantage for long-term measurements and calibration-free operation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t