Blocking in an Optical Filter
To understand blocking, one has to understand the concept of optical density (OD). In an interference filter, OD is generated by reflecting unwanted light back instead of letting it go through the filter.
Filter Cleaning Tech Note
Learn best practices for cleaning your Omega Optical filters. The vast majority of Omega Optical’s interference filters are either sputtered oxide or coatings protected with coverslips.
Ultra-narrow bandpass optical interference filters for deep space optical communication
Proc. SPIE 10524, Free-Space Laser Communication and Atmospheric Propagation XXX, 1052416 (2018) doi:10.1117/12.2290753
How much OD do you actually need for Flow Cytometry?
In this technical note, we will go through an example of how to determine the blocking level needed in a typical flow-cytometer system.
Ion-assisted deposition of moisture-stable Hafnium Oxide films for ultraviolet applications
Applied Optics, 41 (16): 3205-3210 (2002) doi 10.1364/AO.41.003205
Ion-assisted deposition of moisture stable Hafnium Oxide thin-films
Dale Morton and Traci R. Jensen Optical Interference Coatings, OSA Technical Digest Series (Optical Society of America, 2001), paper MB6 doi 10.1364/OIC.2001.mb6
Gradient Index Film Fabrication Using Optical Control Techniques
Proc. SPIE 2046, Inhomogeneous and Quasi-Inhomogeneous Optical Coatings, 224 (November 2, 1993); http://dx.doi.org/10.1117/12.163553
Graded Period Rugates
Proc. SPIE 2046, Inhomogeneous and Quasi-Inhomogeneous Optical Coatings, 147 (November 2, 1993); http://dx.doi.org/10.1117/12.163552
Narrow Band Infrared Filters with Broad Field of View
Proc. SPIE 6206, Infrared Technology and Applications XXXII, 62062S (May 18, 2006); http://dx.doi.org/10.1117/12.683972
Filters for Dual Band Infrared Imagers
Proc. SPIE 7298, Infrared Technology and Applications XXXV, 72982J (May 06, 2009); http://dx.doi.org/10.1117/12.820059
Measuring Sharp Spectral Edges to High Optical Density
56th Annual Technical Conference Proceedings of the Society of Vacuum Coaters, (2013). Reproduced by permission of the Society of Vacuum Coaters.
Sub-Nanometer Bandpass Coatings for LIDAR and Astronomy
Proc. SPIE 9612, Lidar Remote Sensing for Environmental Monitoring XV, 96120K (September 1, 2015); http://dx.doi.org/10.1117/12.2208368