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MEMS VCSEL Swept Source Utility 2.3.1, released by Thorlabs as the second iteration of the package, is a Windows-based graphical user interface engineered to deliver complete, real-time command of the company’s MEMS-VCSEL swept-source laser systems. Positioned within the scientific instrumentation software category, the application translates complex laser-tuning parameters into an intuitive dashboard, enabling researchers and OEM developers to set, monitor, and log centre wavelength, sweep rate, coherence length, and output power without resorting to low-level command scripts. Typical use cases span high-resolution OCT imaging, spectroscopic metrology, fibre-sensor interrogation, and swept-source interferometry, where repeatable, micro-second-scale wavelength agility is critical; the utility’s scripted sweep sequences also support automated calibration routines and long-duration thermal-drift tests. Version 2.3.1 refines the initial 2.0 baseline with faster USB 3.0 enumeration, expanded wavelength presets covering the 1060 nm and 1310 nm bands, and a built-in firmware-update wizard that keeps the MEMS driver electronics synchronised with the latest Thorlabs firmware images. The program saves session profiles as XML for traceability, exports sweep data directly to CSV for MATLAB or Python post-processing, and offers optional LabVIEW VI hooks for integration into larger experimental control loops. Because the laser head is addressed through Thorlabs’ secure device driver stack, the utility maintains Class 1 laser safety interlocks and prevents accidental over-current conditions during parameter exploration. MEMS VCSEL Swept Source Utility is available for free on get.nero.com, with downloads provided via trusted Windows package sources (e.g. winget), always delivering the latest version, and supporting batch installation of multiple applications.
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