{"id":27439,"date":"2024-07-19T14:52:24","date_gmt":"2024-07-19T12:52:24","guid":{"rendered":"https:\/\/www.linseis.com\/messgeraete\/thermal-conductivity\/tf-lfa\/"},"modified":"2026-03-18T14:15:01","modified_gmt":"2026-03-18T13:15:01","slug":"tf-lfa-l54","status":"publish","type":"messgeraete","link":"https:\/\/www.linseis.com\/en\/instruments\/electrical-property\/thin-film-thin-film-analysis\/tf-lfa-l54\/","title":{"rendered":"TF-LFA L54"},"content":{"rendered":"\t\t
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TF-LFA L54: Frequency Domain Thermoreflectance for Thin Film Thermal Analysis<\/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 <\/strong>LINSEIS TF-LFA L54<\/b><\/span> is an advanced laser-based measurement system utilizing the Frequency Domain Thermoreflectance (FDTR)<\/strong><\/a> technique for non-contact thermal characterization of thin films<\/b><\/a> and multilayer structures<\/b><\/span>.
It enables the precise determination of thermal conductivity<\/b><\/a>, diffusivity<\/b><\/a>, effusivity, volumetric heat capacity<\/b><\/a>, and thermal boundary conductance<\/strong> \u2014 even in ultra-thin layers down to a few nanometers.<\/p>

Designed for research and high-end industrial applications, the TF-LFA L54 combines exceptional sensitivity<\/span>, broad temperature capability<\/span><\/b> (from room temperature up to 500 \u00b0C), and modular options<\/b><\/span> for anisotropy, sample mapping, and optical visualization.
This innovative system offers outstanding precision, stability, and flexibility, making it ideal for the characterization of semiconductors<\/b><\/a>, coatings, thermoelectric materials, LEDs, and other advanced thin-film technologies<\/span>.<\/b><\/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<\/div>\n\t\t\t\t<\/div>\n\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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Optical Technology Upgrade\u00a0<\/strong><\/h3>

The TF-LFA L54<\/b><\/span> applies the Frequency Domain Thermoreflectance (FDTR)<\/b><\/span> method for contactless thermal analysis of thin films<\/b><\/span>.<\/p>

Key advantages of the FDTR technology include:<\/p>

  • Contactless measurement<\/b><\/span> \u2013 eliminates mechanical interference and ensures maximum accuracy for delicate or micro-scale samples.<\/p><\/li>

  • High frequency precision<\/b><\/span> \u2013 allows the determination of thermal properties across a broad modulation range for a wide variety of thin-film materials.<\/p><\/li>

  • Enhanced stability<\/b><\/span> \u2013 optimized optical alignment and automatic focusing guarantee reproducible results without manual adjustment.<\/p><\/li>

  • Wide measurement range<\/b><\/span> \u2013 enables analysis of films from a few nanometers up to several micrometers in thickness, at temperatures up to 500 \u00b0C.<\/p><\/li><\/ul>\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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    New hardware features<\/strong><\/h3>

    Advanced Optical Design<\/b><\/span>
    The TF-LFA L54 features a state-of-the-art dual-laser setup with a modulated pump laser (405 nm)<\/strong> and a continuous-wave probe laser (532 nm)<\/strong> for precise excitation and detection. This optimized configuration ensures maximum signal stability and measurement sensitivity, even for ultra-thin films.<\/p>

    Automatic Focus Adjustment<\/span>
    An integrated auto-focusing system<\/strong> continuously optimizes the laser position during measurement, eliminating manual adjustment and guaranteeing reproducible results for every sample.<\/p>

    Thermal Mapping Function<\/b><\/span>
    An optional sample mapping mode<\/strong> allows users to analyze thermal properties across multiple points or areas on the sample surface \u2014 ideal for studying inhomogeneous films or verifying coating uniformity.<\/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<\/div>\n\t\t

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    The optional camera module<\/strong> provides a live view of the measurement area, enabling exact positioning of the laser spot and visual control of the sample surface.<\/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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    Linseis Lab Link <\/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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    With Linseis Lab Link, we offer an integrated solution for eliminating uncertainties in measurement results. With direct access to our application experts via the software, you receive advice on the correct measurement procedure and how to evaluate the results. This direct communication ensures optimal results and maximizes the efficiency of your measurements for accurate analysis and research and a smooth process flow. <\/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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    The TF-LFA L54 features a high-precision dual-laser setup<\/strong> consisting of a modulated pump laser (405 nm) and a continuous-wave probe laser (532 nm).
    This configuration enables stable, high-resolution detection<\/strong> of the thermoreflectance signal and ensures accurate thermal measurements even for ultra-thin layers in the nanometer 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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    Automatic Optical Alignment <\/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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    An integrated auto-focusing and alignment system<\/strong> continuously adjusts the laser focus during operation.
    This eliminates the need for manual calibration, providing consistent measurement conditions<\/strong>, improved reproducibility, and reduced operator influence.<\/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