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Articles

Igor Gornushkin and colleagues at BAM Federal Institute for Materials Research and Testing in Berlin, Germany studied the feasibility of using optical spectroscopy as a control method for laser metal deposition, and he recently spoke to us about this work. Gornushkin is the 2022 recipient of the Lester W. Strock Award from the New England Chapter of the Society for Applied Spectroscopy (SAS). 

Optical Detection of Defects during Laser Metal Deposition: Simulations and Experiment

, is the General Manager of the Applied Systems business at Ocean Insight, an affiliate associate professor at the University of Washington, and has started and advised numerous companies in spectroscopy and in applications of machine learning. He has approximately 40 peer-reviewed publications and 6 patents. His work in practical optical spectroscopy, such as LIBS, Raman, and TDL spectroscopy, dovetails with the coverage in this column, which reviews methods (new and old) in laser-based spectroscopy and optical sensing.

A frequency comb is a laser source, with evenly spaced narrow lines, potentially useful for spectroscopy applications, particularly as a source or for alignment of the wavelength axis.

A Brush with Frequency Comb Spectroscopy: A Developing Story

The Optics Physics app is designed to serve as a pocket dictionary of all optical characteristics and their analyses, with formulas to find various parameters.

App of the Month: Optics Physics

Dr. Richard R. Hark, a professor in the Department of Chemistry at Juniata College in Huntingdon, Pennsylvania, discusses his work with LIBS in applications such as forensic science, conflict minerals, and geochemical fingerprinting.

Laser-Induced Breakdown Spectroscopy: A Closer Look at the Capabilities of LIBS

The choices for LIBS hardware are discussed in detail, particularly lasers and spectrometers, and the trade-offs between cost, size, and performance are illustrated.

LIBS Basics, Part II: Hardware

Lasers and optics continue to comprise a thriving and emerging market in the field of spectroscopy, with new breakthroughs occurring at a rapid pace. Here to discuss the latest developments in these areas are Alexander Bolshakov, Applied Spectra; Phil Taday, TeraView; and Rob Morris, Ocean Optics, Inc.

Wavelength Tech Forum: Optics/Lasers

Joining us for this discussion are Rob Morris, Ocean Optics, Inc.; Alexander Bol'shakov, Applied Spectra; and Elizabeth Illy, Cobolt AB.

Technology Forum: Optics/Lasers

Joining us for this discussion are Rob Morris, Ocean Optics; and Paul Gelsinger-Austin, Petra Lepke, and Samuel Sadoulet, Edmund Optics.

Technology Forum: SPIE Optics and Photonics Conference

Researchers at the Massachusetts Institute of Technology have developed light-detecting fibers that act like a flexible camera when woven into a web.

Can You See Me Now?

The author discusses the use of filters in optical microscopy and the advantages that have been gained as a result of developments in filter technology.