ARTICLES BY MARISSA STONEFIELD

Behind The Curtain: Developing The First Laser Based On Bound States In The Continuum (BIC)
Behind The Curtain: Developing The First Laser Based On Bound States In The Continuum (BIC) Nearly 90 years after physicists John von Neumann and Eugene Wigner predicted that certain wave states are able to remain perfectly confined, or bound, in an open system, this wave physics phenomenon - called bound states in the continuum (BIC) - has been demonstrated by researchers at the University of California (UC) in San Diego in the form of the world’s first BIC laser. This Q&A discusses the design process and unique...  Continue Reading...
Visualizing Growth In Hyperspectral Imaging: A Q&A With TruTag CTO Hod Finkelstein Dr. Finkelstein discussed with Photonics Online how his experience in the medtech and RF industries helped inform decisions when creating new HSI technologies. He offered insight into maintaining balance in the growth of both optical and data processing technologies for HSI, and discussed development of TruTag’s Prism Award-winning hyperspectral imaging solution.  Continue Reading...
Frequently Asked Questions: Optical Thin Film Filters
Frequently Asked Questions: Optical Thin Film Filters This article answers an array of frequently asked questions about optical thin film filters. It provides in-depth information on what they are, how they are created, how they perform, and what to look for when selecting an optical thin film filter supplier.  Continue Reading...
Understanding A Camera’s Resolution
Understanding A Camera’s Resolution The resolution of an image sensor describes the total number of pixel which can be used to detect an image. From the standpoint of the image sensor it is sufficient to count the number and describe it usually as product of the horizontal number of pixel times the vertical number of pixel which gives the total number of pixel.  Continue Reading...
Understanding A Camera's Dynamic Range
Understanding A Camera's Dynamic Range Since many camera manufacturers define dynamic range from a different point of view, a distinction should be made between the “dynamic range of an sCMOS, CMOS, or CCD image sensor,” “dynamic range of an analog-to-digital-conversion,” “usable dynamic range,” and “maximum dynamic range or SNR.”   Continue Reading...
Fluorescence Microscopy Technique Provides New Views Of Biological Processes
Fluorescence Microscopy Technique Provides New Views Of Biological Processes Fluorescence microscopy has long been a powerful tool in biological research. A form known as total internal reflection fluorescence (TIRF) microscopy has more recently been used to watch biological processes unfold in real time. By taking advantage of the ability to label individual molecules with different colors of fluorescent tags, TIRF microscopy now affords scientists a view into the complex molecular assemblies that govern cellular...  Continue Reading...
Building A Do-It-Yourself Atomic Force Microscope
Building A Do-It-Yourself Atomic Force Microscope Atomic force microscopes (AFMs) are versatile tools for characterizing surfaces down to the subnanometer scale. Researchers can build their own AFMs for as little as $30,000 using off-the-shelf components such as nanopositioning stages.  Continue Reading...
Technology Advances Lead To CMOS Sensor With Record Resolution
Technology Advances Lead To CMOS Sensor With Record Resolution In the past decade, CMOS sensors have emerged as the imaging technology of choice for many applications. Today, they are not only used in almost all cell phones and mobile devices, but are also commonly found in industrial and medical cameras.  Continue Reading...
How To Make A Good Reflected Color Measurement
How To Make A Good Reflected Color Measurement When measuring reflection from an object, it is important to consider which type of reflection is dominant, and whether some or all the reflected light needs to be collected. This article discusses the best practices for making good reflected color measurements that can be used in a wide range of optical imaging applications.  Continue Reading...
A Q&A With Dr. Brian Pogue, Incoming Editor-in-Chief, SPIE Journal of Biomedical Optics Dr. Brian Pogue of Dartmouth College will take the helm as editor-in-chief of SPIE’s Journal of Biomedical Optics (JBO) starting Jan. 1, 2018. Pogue spoke with Photonics Online about his decision to join the JBO as editor-in-chief, his vision for the journal, and how he balances all of his interests in limited time.  Continue Reading...
More From Marissa Stonefield