Thin, parallel optics are difficult to measure, because both front and back surfaces reflect light. Fourier- Transform Phase Shifting Interferometry can separate those reflections and provide more information than traditional methods.
Engineers and designers working on LiDAR applications should consider critical filter issues early on.
The evolution of sensing and imaging systems, combined with the desire to create safer, more efficient transportation systems, is driving the development of autonomous vehicles. LiDAR is a key technology that will eventually help carry this growth through to “Level 5” autonomy.
Midwave (MWIR) infrared light is important in many hardware applications and optical filters are critical to success. Some simple practices can help avoid over specifying filter characteristics and driving up costs.
In general, typical filter optical specifications will include the wavelength ranges over which to reflect and transmit light, clear aperture of the filter, the polarization state of light for non-normal angles of incidence, light coherency (laser or white light), optical beam size and cone angle of light, and more.
Opto Diode Corporation, an ITW company, introduces the SXUV100TF135 and SXUV100TF135B photodiodes with integrated thin-film filters. The detectors each feature a 100 mm2 active area and a directly-deposited thin-film filter for detection between 12 nm and 18 nm. Both detectors have typical responsivity of 0.09 A/W at 13.5 nm and are optimized for different electrical performance. The photodiodes are ideal for use in applications such as laser power monitoring, semiconductor photolithography, and metrology systems that utilize extreme ultraviolet light.
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.
Iridian Spectral Technologies offers advanced thin film optical filter technology for telecom, spectroscopic instrumentation and lasers, as well as biophotonics, micro-optics, and aerospace applications.
Optical filters play a key part in providing wavelength selections in earth-observation systems, but they provide a unique challenge in space-based applications. Jason Palidwar with Iridian Spectral talked to us about some of those challenges, and how his organization has addressed them.
Jason Palidwar with Iridian Spectral Technologies spent some time with us on the last day of SPIE’s 2016 DCS exhibition to talk about the challenges encountered in the mid-wave spectrum and how his company has worked around them.
Jason Palidwar of Iridian Spectral kicked off our DSS exhibition coverage by giving us a closer look at what they’re showcasing this year.
Iridian Spectral has been busy expanding its product offerings, and Hongbai Lao was kind enough to show us what the company was featuring at the show.