Photonics Spectra: thin-film optics This is the syndication feed for Photonics Spectra: thin-film optics. https://www.photonics.com/Splash.aspx?Tag=thin-film+optics Thu, 28 Mar 2024 22:30:45 GMT Mon, 30 Nov 2015 14:45:44 GMT 1800 Thin-Film Optical Filters for Phase Control Applications
Thin-film filters (TFFs) can create virtually any spectral shape imaginable to modify the transmission or reflection of light in optical systems. During design, strong emphasis is often placed on optimizing the amplitude response, although for many emerging optics applications, equally important is the need to control the phase of the light. The frequently neglected phase response is increasingly a consideration for optical coating manufacturers, creating challenges that require new, sophisticated design and manufacturing methods.


Figure 1. Thin-film mirror stack reflection, amplitude and phase. QW = quarter wave.
It’s important to understand the basic physics of controlling both the phase and the transmission/reflection...]]>
https://www.photonics.com/Articles/Thin-Film_Optical_Filters_for_Phase_Control/p5/a58006 A58006 Mon, 30 Nov 2015 14:45:44 GMT
THIN-FILM DESIGN
The second edition of Practical Design of Optical Thin Films begins with a section on the fundamentals of thin-film optics and the use of graphical methods in thin-film design, covering areas such as antireflection coatings, physical versus optical thickness, high reflectors, minus filters and narrow blocking bands, and designing coatings with absorbing materials. Reflectance, admittance and triangle diagrams are discussed, as are ellipsometry plots and inhomogeneous index functions. The 260-page resource also presents sections on estimating what can be done before designing and on the Fourier viewpoint of optical coatings. Broadband antireflection coating design examples are included. Ronald R. Willey; Willey Optical, Consultants,...]]>
https://www.photonics.com/Articles/THIN-FILM_DESIGN/p5/a33056 A33056 Tue, 01 Apr 2008 00:00:00 GMT