Optical Components White Papers & Application Notes

  1. More Raman Wavelengths, More Choices: The Utility Of Raman Spectroscopy

    Raman spectroscopy plays a huge part in the analysis of materials such as explosives in the field, pharmaceutical ingredients in the lab, and changes in genetic material, proteins, and lipids in clinical settings. Utilizing non-elastic scattering of laser light from a molecule to probe the molecular structure and create a vibrational transition in the sample, a molecular fingerprint is gradually built up. There are multiple wavelength analysis selections that can be used for a wide variety of applications. This application note discusses the benefits of using each wavelength, and presents different applications they are used for.

  2. Metallic Mirror Coatings

    Edmund Optics offers a large variety of precision parabolic, spherical, and flat mirrors with an array of metallic and dielectric coatings to suit all application requirements in different regions of the spectrum. Standard metallic mirror coatings include protected aluminum, enhanced aluminum, UV enhanced aluminum, DUV enhanced aluminum, bare gold, protected gold, and protected silver. This application note introduces their first and second surface mirrors, enhanced metal coatings, and available custom coatings.

  3. Specifying Wavefront Or Surface Error In Aspheres

    The optical quality of aspheric mirrors is commonly specified by their surface accuracy and reflected wavefront error. The surface error is the deviation of the surface from its perfect form, while the wavefront error is the deviation of the resulting reflected or transmitted wavefront from its perfect shape. It is often assumed that these tolerances are related to each other by a simple scale factor. However, that is not the case when it comes to aspheric mirrors. This application note compares surface accuracy measurements with wavefront error measurements, and provides an application example on using them in off-axis parabolas.

  4. Wavelength Selective Switching In Optical Communications

    Micro-lens arrays are monolithic components manufactured from synthetic fused silica and a laser writing process, which are created for high accuracy array collimation and coupling. PowerPhotonic designs and develops these micro-lens arrays for applications involving coupling between laser sources, fiber and waveguide arrays, optical multiplexing, and optical switching. This application note discusses micro-lens arrays, as well as the technologies they are used in such as wavelength selective switching, WSS technology, and MEMS and LCoS switches.

  5. Devices Automatically In The Best Light

    Manual instruments in production are gradually being replaced by automated optical measurement systems, where optimal illumination determines the test quality. A device that illustrates this transition is the ZEISS O-SELECT with an LED ring light from SCHOTT. 

  6. Thin-Film Optical Components For Use In Non-Linear Optical Systems

    Bio-imaging and detection techniques that use non-linear optical (NLO) phenomena have led to great advancements, such as super-resolution images, label-free visualization of naturally occurring biomolecules, and greater freedom for working with in-vivo samples. This white paper discusses the importance of choosing thin-film optical components for NLO systems to ensure optimal signal strength, resolution, and image quality.

  7. Environmentally Friendly Fibers

    A new demand that has been placed on glass optical fibers is the need for environmental compatibility. The SCHOTT technology group provides a solution for this demand with their new PURAVIS® glass optical fibers that offer several improved performance parameters compared to other types of glass. The process for manufacturing these products does not use lead, arsenic, or antimony, and already complies with future environmental requirements.

  8. Optical Components for SWIR Imaging

    This application note provides information on the benefits of SWIR imaging in harsh or low-light level conditions, and PG&O's capabilities in manufacturing optical components for SWIR imaging.

  9. How To Select A Spherical Lens

    Optical systems use lenses to focus, collimate, expand, collect, and image light. Ranging from convex to concave, and bestform to aspheric, any lens selection must be made with the utmost consideration for its purpose as well as its required quality. This white paper delivers a review of singlet spherical lens shapes, and guidance on deciding the best lens characteristics for each application.

  10. Large-Format, Narrow Band Pass Filters (NBPF) – A Uniformity Challenge

    Within so many diverse optical filtering applications, large-format (>100 mm diameter), narrow bandpass filters (NBPF) are required to be used alongside large collection optics in order to facilitate specific and selective analysis of a phenomena or the substance of interest.