نتایج جستجو برای: optical glass bk7

تعداد نتایج: 333197  

2015
R. Dubey E. Barakat H. P. Herzig

Dielectric multilayers sustaining Bloch surface waves (BSWs) are considered as a novel platform for two dimensional (2D) integrated optics. The dielectric platform is exploited to manipulate surface waves by patterning 2D dielectric optical components on top of it. BSW shows a potential of higher propagation length and large resonance strength because of low loss characteristics of dielectric m...

Journal: :Applied sciences 2022

This paper aims to present a novel rapid hot embossing approach and study filling capacity of optical glass in the process. Firstly, device is developed, which consists heating module precision loading module. Particularly, allows maximum temperature 800 °C rate 300 °C/min, with decent control accuracy uniform distribution. In process, by incompletely microhole silicon carbide mold, microlens w...

2013
Shinn-Fwu Wang Hung-Shing Tsai Yi Chu Jeng-Hua Wei Yuan-Fong Chau An-Li Liu

In this paper, an improved small-angle sensor based on total-internal reflection (TIR) and surface plasmon resonance (SPR) in heterodyne interferometry (HI) is proposed. The improved small-angle sensor is designed as a reflective elongated prism made of BK7 glass. The shorter-side surface of the reflective elongated prism was coated with a 2 nm Ti film and a 45.5 nm Au film, but the longer-side...

Surface roughness is a significant parameter which determines the efficiency of optical components. Surface damages induced by grinding strongly influence the mechanical strength and optical quality of optical glasses. It is meaningful to rapid evaluate the surface roughness through the measurement of different grinding parameters. In this study, a cup diamond wheel (D64) is used in grinding pr...

Journal: :Applied Physics A 2023

Abstract A comparative study of the evolution diameter and depth ablated craters, while varying systematically both pulse energy spot size is reported. It reveals that surface ablation threshold fluences double-checked by diameter-regression method a multiphoton-absorption-based fit show clear dependence on radius processing laser beam BK7 optical glass surface. Tighter focusing results in rise...

2014
R.Dubey E. Barakat H. P. Herzig

A novel dielectric multilayer platform sustaining Bloch surface waves is investigated for integrated photonic chips. These surface waves can be manipulated by two dimensional dielectric optical components patterned on top of the platform. We study the properties of high refractive index materials (TiO2) as active top layer of platform. Concept The Bloch surface waves (BSWs) are surface electrom...

Journal: :Applied optics 2010
Thomas Allsop Mykhaylo Dubov Vladimir Mezentsev Ian Bennion

A series of waveguides was inscribed in a borosilicate glass (BK7) by an 11 MHz repetition rate femtosecond laser operating with pulse energies from 16 to 30 nJ and focused at various depths within the bulk material. The index modification was measured using a quantitative phase microscopy technique that revealed central index changes ranging from 5 x 10(-3) to 10(-2), leading to waveguides tha...

Journal: :Optics and Spectroscopy 2022

The article proposes a method for measuring the refractive index using goniometric system that does not require prism angle, which simplifies measurement process compared to widely used methods of minimum deviation and autocollimation. This can be measure samples in form triangular prisms visible, ultraviolet infrared ranges. To implement method, was used. obtain reflection refracted beam, fixe...

Journal: :The International Journal of Advanced Manufacturing Technology 2021

The emergence of ultrasonic vibration–assisted polishing technology has effectively improved the machining accuracy and efficiency hard brittle materials in modern optical industry; however, material removal mechanism (UVAP) still needs to be further revealed. This paper focuses on glass (BK7), application axial vibration, atomization slurry; model was established. Based analysis relationship b...

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