Iridian Filters Chosen for Dragonfly Telescope
Ottawa, Canada, June 7, 2021 Iridian Spectral Technologies congratulates the team at the Dunlap Institute at the University of Toronto on securing nearly $2 million in support from the Canada Foundation for Innovation (CFI) for the development and expansion of their...RoHS Compliance Statement
Iridian’s products are compliant with the EU directive…
Environmental and Mechanical Durability Testing
Iridian has been accorded Telcordia qualification under the Telcordia Group Requirements…
Optical Filter Visual Inspection Criteria
As experts in the design and manufacture of thin film optical filters, Iridian employs rigorous quality assurance processes…
Conflict Minerals Policy Statement
Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act, and the Securities and Exchange Commission Rules adopted in connection therewith, require certain corporations to report the use of “Conflict Minerals” in the manufacture of...Band Pass Filter Tutorial
Band Pass Filters (BPFs) are used to pass (transmit) a range of wavelengths and to block (reflect) other wavelength on either side of the bandpass. The region of high transmittance is known…
CWDM Filter Tutorial
Coarse Wavelength Division Multiplexing (CWDM) filters are designed to multiplex and de-multiplex wavelength signals in metropolitan, access and enterprise networks and for Cable TV applications. In addition…
Optical Interconnects for Data Centers- Lighting the Cloud
Introduction As data storage and computing resources move into the cloud the demand on data centers for storage and data transfer capacity has increased dramatically over the last decade (ref. 1). Stored data needs to be accessed and transferred constantly to and from...Edge Filters for Raman Spectroscopy
Raman spectroscopy probes the molecular vibrational and rotational modes of a material in order to detect and identify the material. Typically, laser light is incident upon the material and the scattered light is measured.
The excitation source (laser line) intensity is often to orders of magnitude greater than the Raman scattered signal. Therefore, edge pass (or notch) filters are required to block the Rayleigh scattered laser light while transmitting the red-wavelength shifted (Stokes) and/or the blue-wavelength shifted (Anti-Stokes) Raman scattered signal.
Handheld Raman vs “Fingerprint” Applications and the Different Optical Filters that Enable Them
Raman spectroscopy is a powerful and increasingly ubiquitous analytical tool capable of identifying molecular constituents of samples under test and, when combined with microscopy, exploring specific cellular structures and functions. Non-invasive, non-contact, requiring no sample preparation or chemical tagging – it is no wonder that Raman has established a presence as an invaluable analytical technique both in labs and in the field.
