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...

BK7 glass is widely used in various optical instruments as a common ceramic material. However, there are still several difficulties the polishing process due to its material properties. Ultrasonic vibration–assisted (UVAP) for excellent removal few researches on model of UVAP tilted. Therefore, this paper investigates problem. A was established titled column polishing; The pressure distribution...

Borosilicate BK7 glasses doped with different amounts of CeO2 (0.5,1,1.5%) were prepared by the convenient melting process in this work. DTA analysis proved that 0.5-1% CeO2 has a network modifier role and then up to 1.5% it shows network former role.For structural studies, FT-IR and Raman spectroscopy were carried out. Fermi energy level, direct/ indirect optical band gap and Urbach energy wer...

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In many applications, the spatial refractive index variation – called homogeneity within a measurement aperture either in one or two directions is important. Typical application examples are prisms ultra-precision metrology with stability multiple directions. Large lenses used artificial laser guide star systems for atmospheric correction large telescopes. The challenge of enabling highest homo...

We discuss the dynamics of ultrashort pulsed laser excitation in bulk optical silica-based glasses (fused silica and borosilicate BK7) well-above the permanent modification threshold. We indicate subsequent structural and thermomechanical energy relaxation paths that translate into positive and negative refractive index changes, compression and rarefaction zones. If fast electronic decay occurs...

This paper proposes a measuring apparatus and method for simultaneous determination of the thermal expansion coefficient biaxial Young’s modulus indium tin oxide (ITO) thin films. ITO films simultaneously coated on N-BK7 S-TIM35 glass substrates were prepared by direct current (DC) magnetron sputtering deposition. The thermo-mechanical parameters investigated experimentally. Thermal stress in s...

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...