{"id":27433,"date":"2024-07-18T08:19:02","date_gmt":"2024-07-18T06:19:02","guid":{"rendered":"https:\/\/www.linseis.com\/messgeraete\/thermal-conductivity\/plh\/"},"modified":"2026-02-13T11:51:56","modified_gmt":"2026-02-13T10:51:56","slug":"plh-l53-periodic-laser-heating","status":"publish","type":"messgeraete","link":"https:\/\/www.linseis.com\/en\/instruments\/thermal-conductivity\/plh-l53-periodic-laser-heating\/","title":{"rendered":"PLH L53"},"content":{"rendered":"\t\t
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PLH L53: Periodic Laser Heating for High-Precision Thermal Characterization of Thin Materials<\/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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The <\/strong>LINSEIS <\/b><\/span>PLH <\/b><\/span>L53<\/span> <\/b>is a high-precision, laser-based measurement system for determining the thermal conductivity<\/b><\/a> of thin films<\/b><\/a>, foils and membranes in the micrometer range<\/strong> using the Periodic Laser Heating (PLH)<\/b><\/span> method.
This non-contact technique enables reliable thermal characterization of delicate and free-standing samples without the need for mechanical contact or complex sample preparation.<\/p>

Designed for research and advanced material development, the PLH L53<\/b> allows precise analysis of homogeneous and inhomogeneous thin materials<\/strong>, including metallic foils, polymer<\/strong><\/a> films and membrane structures.
With its optical measurement principle, high sensitivity and robust evaluation models, the PLH L53<\/b> offers accurate, reproducible and application-relevant thermal conductivity data<\/strong> for modern thin-material technologies.<\/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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Electronics upgrade<\/strong><\/h3>

The measuring electronics of the PLH L53<\/strong> have been specifically developed for optical, frequency-based Periodic Laser Heating measurements<\/strong> and provide significant performance improvements in signal stability and data acquisition.<\/p>

The advantages of the optimized electronic architecture include:<\/p>

  • High signal stability<\/strong>
    Ensures reliable phase and amplitude detection during periodic laser excitation, even over extended measurement times.<\/p><\/li>

  • Low noise electronics<\/strong>
    Minimizes electronic interference and improves signal-to-noise ratio for precise thermal conductivity determination of thin materials.<\/p><\/li>

  • Accurate frequency control<\/strong>
    Enables stable and reproducible laser modulation, which is essential for frequency-domain evaluation.<\/p><\/li>

  • Excellent reproducibility<\/strong>
    Guarantees consistent measurement results for repeated analyses of films, foils and membranes.<\/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>

    • Contactless laser-based measurement concept<\/strong>
      The PLH L53 uses a fully non-contact optical Periodic Laser Heating setup<\/strong>, eliminating any mechanical interaction with the sample.
      This enables reliable thermal conductivity measurements of delicate, thin and flexible materials<\/strong> such as foils and membranes without influencing their intrinsic properties.<\/p><\/li>

    • Optimized optical system for \u00b5m-scale samples<\/strong>
      Precisely aligned laser heating and detection optics ensure homogeneous excitation<\/strong> and accurate temperature response measurement.
      The system is specifically designed for thin films, foils and membranes in the micrometer range<\/strong>, providing high sensitivity and stable signal acquisition.<\/p><\/li>

    • Flexible sample handling and stable alignment<\/strong>
      The hardware design supports the investigation of free-standing samples as well as substrate-based structures<\/strong> without complex preparation steps.
      A robust optical layout ensures long-term alignment stability and excellent reproducibility<\/strong>, even during repeated measurements and extended operation.<\/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\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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      Application-focused data evaluation <\/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 new device design is characterized by an elegant aluminium housing that is both robust and visually appealing. An LED status bar provides a user-friendly visualization of important information. A touch panel enables intuitive operation and ensures a modern user experience that combines convenience and functionality. The focus of the new design is on ergonomic handling.<\/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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      High reproducibility and measurement stability <\/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 combination of synchronized electronics, stable laser modulation and robust optical alignment ensures consistent and reproducible results<\/strong>.
      This is particularly important for comparative studies, parameter variation and long-term investigations.<\/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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      Optimized workflow for research and development <\/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 PLH L53 is designed for efficient operation in laboratory environments, combining intuitive handling<\/strong>, minimal sample preparation and reliable measurement routines.
        This allows seamless integration into existing R&D workflows and supports fast, application-oriented material characterization.<\/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\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t