TECH FOCUS RAMAN SPECTROSCOPY Tech Focus sponsored by


PRO-LITE TECHNOLOGY FEATURED PRODUCT


High performance Raman; reproducible SERS


Raman spectroscopy is a powerful analytical technique – combining high selectivity, speed and ease of use – yet Raman scattering is an inherently low-signal effect. The measurement of low concentration solutions, such as the trace detection of drugs, remains a challenge for this spectroscopic technique, but a signal enhancement technique exists. Surface enhanced Raman spectroscopy (SERS) uses nanoscale metal structures to significantly amplify the electric field of the laser, resulting in some 1,000 times increase in the Raman signal. Current implementation of SERS has, however, presented either a difficulty in sample preparation or spatial inhomogeneities, resulting in low signal reproducibility. Wasatch Photonics and Nikalyte recently announced a partnership to


facilitate evaluation and testing of a novel SERS substrate manufactured using Nikalyte’s vacuum nanoparticle deposition technique, resulting in ultra-pure and highly uniformly distributed nanoparticles, free of contamination and easy to prepare. Contact us and discover how Wasatch Raman spectrometers make


trace detection and identification of materials using Raman a viable technique for use in the laboratory, the field and the clinic.


Find out more at: https://wasatchphotonics.com/applications/novel-sers-substrate/


The available wavelengths are 405nm, 532nm, 785nm and 830nm. Cobolt offers a broad range of compact lasers that are suited to high-resolution Raman spectroscopy applications. Stable single-frequency operation combined with the robust thermo- mechanical architecture of HTCure provides narrow linewidths over a large range of operating temperatures, low spectral drift and a spectral purity guaranteed better than 80dB. Coherent supports Raman


spectroscopy and imaging with narrow-line lasers across the entire visible spectrum, with output power from milliwatts to Watts. The


www.electrooptics.com | @electrooptics


ThZ Raman range includes both integrated and modular systems to help access structural information only found in the low frequency region of Raman; to easily identify polymorphic forms or quantify the degree of crystallinity of materials. The RM5 from Delta Photonics is a compact and fully automated Raman microscope for analytical and research purposes. It is designed to be truly confocal, with variable slit and multiple position-adjustable pinhole for higher image definition, better fluorescence rejection and application optimisation. Horiba Scientific has more than 50 years of experience in Raman.


The company provides complete Raman spectroscopy solutions for analytical measurements, research Raman, UV Raman, QC/QA and industrial Raman applications. These include Raman spectrometers, hybrid Raman systems (such as AFM- Raman), modular Raman systems, transmission Raman analysers, dedicated in-situ process Raman spectrometers, and miniaturised Raman instruments for high volume OEM manufacturers. Integrated Optics supplies


continuous-wave (CW), single- longitudinal mode (SLM) lasers with all the most frequently used wavelengths for Raman


spectroscopy: 405nm, 488nm, 532nm, 633nm, 785nm, 830nm, 1030nm and 1064nm. Klar Scientific’s instruments


target scientists and engineers with more modest budgets, whose primary interest is in photoluminescence but who occasionally need to make a Raman measurement as well. The company provides a Raman spectroscopy kit at 532nm, which includes a powerful laser and more sensitive spectrometer. For users whose needs span multiple types of spectroscopy, Klar’s reconfigurable, modular instruments can be a cost- effective solution.


May 2022 Electro Optics 35


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