Articles

Graphene saturable absorbers applications in fiber lasers

Two-dimensional materials are widely used in a variety of fields, such as medical treatment, industrial preparation, machining, etc. In this review, we have made a detailed description of the development of fi...

Authors: Xi Peng and Yixin Yan

Integrable solution for light shaping based on a Fourier-pair mapping

In far-field light shaping, one of the design methods is based on a one-to-one map between the irradiance of the source and target. However, an integrability issue may occur in this kind of algorithms, either ...

Authors: Liangxin Yang, Irfan Badar, Christian Hellmann and Frank Wyrowski

Binary defocusing technique based on complementary decoding with unconstrained dual projectors

Binary defocusing technique can effectively break the limitation of hardware speed, which has been widely used in the real-time three-dimensional (3D) reconstruction. In addition, fusion technique can reduce c...

Authors: Xuexing Li and Wenhui Zhang

Design of a phosphor-converted LED based lighting system considering both the lighting and color uniformity

In this work, a scheme of combining an aspheric reflector and a primary packaging freeform lens in phosphor-converted lighting-emitting diode (pc-LED) based lighting system design was developed. In contrast to...

Authors: Jinren Yan

Assessment about Luneberg integrals and application to digital in-line holography

In this publication, the Luneberg integrals are revisited and the conditions of the using of such integrals have been recalled. Additivity law of Luneberg’s integrals and the link with the Frenel kernel for th...

Authors: S. Coëtmellec, D. Lebrun, M. Brunel and A. J. E. M. Janssen

Metamaterials subwavelength terahertz resonant cavities

One of the unique properties of metamaterials is the ability to manipulate electromagnetic waves at subwavelength scales, made possible by their structure on these scales. Here, rather than consider effective ...

Authors: M. Al-Rubaiee, A. H. Al-Janabi, S. C. Fleming and A. Argyros

Stimulated Raman scattering simulation for imaging optimization

Two simulation programs of a stimulated Raman scattering microscopy (SRS) imaging system with lock-in amplifier (LIA) detection were developed. SRS is an imaging technique based on the vibrational Raman cross-...

Authors: Liron Zada, Bart Fokker, Heather A. Leslie, A. Dick Vethaak, Johannes F. de Boer and Freek Ariese

Quantum dash multi-wavelength lasers for Tbit/s coherent communications and 5G wireless networks

We report on the design, growth, fabrication, and performance of InAs/InP quantum dash (QD) multi-wavelength lasers (MWLs) developed by the National Research Council (NRC) Canada. The key technical specificati...

Authors: Zhenguo Lu, Jiaren Liu, Youxin Mao, Khan Zeb, Guocheng Liu, Philip J. Poole, John Weber, Mohamed Rahim, Grzegorz Pakulski, Chunying Song, Martin Vachon, Pedro Barrios, Daniel Poitras, Shurui Wang and Weihong Jiang

A new route for caesium lead halide perovskite deposition

Inorganic metal halide perovskites are relevant semiconductors for optoelectronic devices. The successful deposition of thin films of CsPbBr₃ and CsPbCl₃ has recently been obtained by Radio-Frequency magnetron sp...

Authors: Naomi Falsini, Andrea Ristori, Francesco Biccari, Nicola Calisi, Giammarco Roini, Paolo Scardi, Stefano Caporali and Anna Vinattieri

Raman spectroscopic detection of interleukin-10 and angiotensin converting enzyme

In this report we present a confocal Raman system to identify the unique spectral features of two proteins, Interleukin-10 and Angiotensin Converting Enzyme. Characteristic Raman spectra were successfully acqu...

Authors: Shuo Zhang, Frederieke A. M. van der Mee, Roel J. Erckens, Carroll A. B. Webers and Tos T. J. M. Berendschot

Fabrication of perfect plasmonic absorbers for blue and near-ultraviolet lights using double-layer wire-grid structures

This study proposes using double-layer wire-grid structures to create narrow-band, perfect plasmonic absorbers, which depend on polarization, for the short-wavelength visible and near-ultraviolet regions of th...

Authors: Atsushi Motogaito, Ryoga Tanaka and Kazumasa Hiramatsu

Transient dynamical-thermal-optical system modeling and simulation

In modern high resolution optical systems like astronomical telescopes or lithographic objectives, performance degradations can be caused by various disturbances. Holistic optical system simulation is required...

Authors: Luzia Hahn and Peter Eberhard

Nano-imprinted subwavelength gratings as polarizing beamsplitters

Polarizing beamsplitters have numerous applications in optical systems, such as systems for freeform surface metrology. They are classically manufactured from birefringent materials or with stacks of dielectri...

Authors: Julian Wüster, Yannick Bourgin, Patrick Feßer, Arne Behrens and Stefan Sinzinger

Crystallization behavior of ion beam sputtered HfO₂ thin films and its effect on the laser-induced damage threshold

In this work, we present our results about the thermal crystallization of ion beam sputtered hafnia on 0001 SiO₂ substrates and its effect on the laser-induced damage threshold (LIDT). The crystallization process...

Authors: Zoltán Balogh-Michels, Igor Stevanovic, Aurelio Borzi, Andreas Bächli, Daniel Schachtler, Thomas Gischkat, Antonia Neels, Alexander Stuck and Roelene Botha

Correction to: Design of high performance and low resistive loss graphene solar cells

An amendment to this paper has been published and can be accessed via the original article.

Authors: Kourosh Rezaei, Mohammad Sabaeian and Yaser Hajati

Improvement of the optical properties after surface error correction of aluminium mirror surfaces

Ion beam finishing techniques of aluminium mirrors have a high potential to meet the increasing demands on applications of high-performance mirror devices for visible and ultraviolet spectral range. Reactively...

Authors: M. Ulitschka, J. Bauer, F. Frost and T. Arnold

A predictable smoothing evolution model for computer-controlled polishing

Quantitative prediction of the smoothing of mid-spatial frequency errors (MSFE) is urgently needed to realize process guidance for computer controlled optical surfacing (CCOS) rather than a qualitative analysi...

Authors: Jing Hou, Pengli Lei, Shiwei Liu, Xianhua Chen, Jian Wang, Wenhui Deng and Bo Zhong

Fabrication-friendly polarization-sensitive plasmonic grating for optimal surface-enhanced Raman spectroscopy

Plasmonic nanostructures are widely utilized in surface-enhanced Raman spectroscopy (SERS) from ultraviolet to near-infrared applications. Periodic nanoplasmonic systems such as plasmonic gratings are of great...

Authors: Arpan Dutta, Tarmo Nuutinen, Khairul Alam, Antti Matikainen, Peng Li, Eero Hulkko, J. Jussi Toppari, Harri Lipsanen and Guoguo Kang

3D flame reconstruction and error calculation from a schlieren projection

In this work a 3D flame reconstruction is performed from a 2D projection of the hot gases of a combustion flame. The projection is obtained using an optical schlieren technique. In this technique, a schlieren ...

Authors: C. Alvarez-Herrera, J. L. Herrera-Aguilar, D. Moreno-Hernández, A. V. Contreras-García and J. G. Murillo-Ramírez

Correction to: Mid-spatial frequency error generation mechanisms and prevention strategies for the grinding process

An amendment to this paper has been published and can be accessed via the original article.

Authors: Mario Pohl, Olga Kukso, Rainer Boerret and Rolf Rascher

Mid-spatial frequency error generation mechanisms and prevention strategies for the grinding process

The research presented in this paper is focused on the link between manufacturing parameters and the resulting mid-spatial frequency error in the manufacturing process of precision optics. The goal is to under...

Authors: Mario Pohl, Olga Kukso, Rainer Boerret and Rolf Rascher

Hermitian and non-Hermitian shortcuts to adiabaticity for fast creation of maximum coherence and beam splitting

We theoretically exploit the shortcuts to adiabaticity (STA) technique in Hermitian and non-Hermitian quantum systems to realize the maximum coherence and beam splitting by eliminating the nonadiabatic couplin...

Authors: Kai Tang, Zhengfeng Hu, Xi Chen and Chengpu Liu

Transverse electric surface waves in ferrite medium surrounded by plasma layers

The theoretical analysis of transverse electric surface waves in ferrite medium surrounded by isotropic plasma layers is presented in this manuscript. Maxwell’s equations in differential form are used, and we ...

Authors: M. Umair, A. Ghaffar, Majeed A. S. Alkanhal, Ali H. Alqahtani and Y. Khan

Macro to nano specimen measurements using photons and electrons with digital holographic interferometry: a review

Today digital holographic interferometry (DHI) is considered a modern full-field non-destructive technique that allows generating 3D quantitative data of a wide variety of specimens. There are diverse optical ...

Authors: María del Socorro Hernández-Montes, Fernando Mendoza-Santoyo, Mauricio Flores Moreno, Manuel de la Torre-Ibarra, Luis Silva Acosta and Natalith Palacios-Ortega

Dual parameter measurement system for temperature and stress based on Sagnac interferomter

Authors: Huanhuan Yan, Li Wang, Songtao Li and Jin Wang

Design of high performance and low resistive loss graphene solar cells

Despite metallic plasmonic excitations can enhance the performance of ultra-thin solar cells however these so-called plasmonic solar cells suffer from a large resistive (Ohmic) loss caused by metallic elements...

Authors: Mohammad Sabaeian and Yaser Hajati

Complimentary code keying of spectral amplitude coding signals in optical buffering with increased capacity

Signal buffering services such as contention resolution and congestion avoidance are essential in optical packet switching networks. In this paper, an optical memory scheme based on spectral amplitude coding (...

Authors: Kai-Sheng Chen and Wien Hong

Full-chain modeling and performance analysis of integral imaging three-dimensional display system

The full-chain system performance characterization is very important for the optimization design of an integral imaging three-dimensional (3D) display system. In this paper, the acquisition and display process...

Authors: Ying Yuan, Xiaorui Wang, Yang Yang, Hang Yuan, Chao Zhang and Zhenshun Zhao

On the average secrecy capacity for indoor visible light communication systems

For visible light communication (VLC), the light signals are transmitted without optical fibers or any sort of wave-guiding. Due to the inherent broadcast nature, physical-layer security emerges as a promising...

Authors: Jun Zheng Zhang and Ke Ke

Research on optical 32QAM-OFDM-PON access scheme with different numbers of sub-carriers using DMT modulation

An optical 32QAM-OFDM-PON system with different numbers of sub-carriers using discrete multitone (DMT) modulation and demodulation is designed and demonstrated by experiment. Electron-optic generation, directl...

Authors: Yufeng Shao, Ying Long, Anrong Wang, Zefu Tan, Guoping Lei, Zhengquan Hu, Yu Liu, Qinzheng Hu, Zhuang Wang and Jie Yang

Construct freeform surface directly in an initial layout of an off-axis reflective image system by seed curve extension and simulated annealing algorithm

In this paper, a method of how to construct a freeform surface directly in an off-axis reflective image system is proposed. The method includes both the seed curve extension algorithm and simulated annealing a...

Authors: Hongxiang Pan, Zhouping Su, Yangliu Zhang and Tao Wu

Spatial localization of hotspots in Fano-resonant plasmonic oligomers for surface-enhanced coherent anti-Stokes Raman scattering

Realization of Fano resonance in plasmonic oligomers is often exploited to design efficient plasmonic substrates for surface-enhanced coherent anti-Stokes Raman scattering. Disk-type Fano-resonant plasmonic ol...

Authors: Arpan Dutta and Erik M. Vartiainen

Design and performance analysis of integrated focusing grating couplers for the transverse-magnetic TM₀₀ mode in a photonic BiCMOS technology

Focusing grating couplers for the excitation of the fundamental transverse-magnetic (TM) mode in integrated silicon photonic waveguides are designed and characterized under the boundary conditions of a photoni...

Authors: Galina Georgieva, Karsten Voigt, Anna Peczek, Christian Mai and Lars Zimmermann

Integrated Er/Si Schottky Photodetectors on the end facet of optical waveguides

In the last two decades there has been growing interest in silicon photonics and in the possibility to integrate new materials to overcome the silicon intrinsic limitations. Erbium has represented a viable sol...

Authors: T. Crisci, L. Moretti, M. Gioffrè, M. Iodice, G. Coppola and M. Casalino

The performance of consumer-grade near infrared spectrometer in traditional Chinese medicine

Technical advances in instrument manufacturing have promoted the miniaturization and cost reduction of portable NIR spectrometers. The price of a device is now affordable to ordinary consumers, which might pro...

Authors: Zhaozhou Lin, Zhihong Zhuang, Chongnian Luo, Jiayu Zhang and Hao Gu

Low-noise transfer of the spectral purity of an optical comb line using a feedforward scheme

We present a detailed frequency noise analysis of a feedforward scheme used to faithfully transfer the spectral properties of an individual line of an optical frequency comb spectrum to a single-mode laser and...

Authors: Pierre Brochard, Benjamin Rudin, Florian Emaury, Valentin J. Wittwer, Stéphane Schilt and Thomas Südmeyer

Correction of wavefront rotation between interferometer and shack-hartmann sensor using bending modes

In some active optics system, the influence function, which is the surface deformation ability of an actuator, is measured by directly detecting the mirror surface using an interferometer and the surface corre...

Authors: Yi Zhu, Tao Chen and Hongzhuang Li

Round robin comparison study on the form measurement of optical freeform surfaces

A round robin comparison of freeform form measurements was carried out by the project partners and stakeholders of a European metrology research project. Altogether six measuring instruments were considered: f...

Authors: Ines Fortmeier, Reyko Schachtschneider, Vit Ledl, Ondrej Matousek, Jens Siepmann, Antonia Harsch, Rolf Beisswanger, Youichi Bitou, Yohan Kondo, Michael Schulz and Clemens Elster

Infrared stripe correction algorithm based on wavelet decomposition and total variation-guided filtering

Stripe non-uniformity severely affects the quality of infrared images. It is challenging to remove stripe noise in low-texture images without blurring the details. We propose a single-frame image stripe correc...

Authors: Ende Wang, Ping Jiang, Xuepeng Li and Hui Cao

Orthogonally coupled geometrical constraints in optics design

Modern optical multi-camera systems require integrating many camera modules in a small volume. A new space-saving concept for such imaging systems is presented, based on intersecting optical paths that utilize...

Authors: Jyrki Kimmel

Fully automating fine-optics manufacture - why so tough, and what are we doing?

Precision and ultra-precision surfaces are crucial for many products – quality optics, joint & cranial implants, turbine blades, and industrial moulds & dies, to name a few. Automation in this context is disti...

Authors: David Douglas Walker, Thomas Leo McCluskey, Guoyu Yu, Sanja Petrovic and Hongyu Li

Study of a periodic spectral fluctuation existing in a fibered optical feedback cavity-enhanced absorption spectroscopy (OF-CEAS)

A special periodic spectral fluctuation is observed during the study of a fibered high sensitivity optical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) for the measurement of trace gas. This spec...

Authors: Zhifu Luo, Zhongqi Tan and Xingwu Long

Inducing tunable single-mode operation of Fabry-Perot semiconductor laser coupled with very-short cavity with selective optical feedback

We report on achieving tuned single mode operation of a multimode semiconductor laser by coupling it to a very-short external cavity with selective feedback. We show that the induced uniform feedback light fro...

Authors: Mohammed S. Al-Ghamdi, Ahmed Bakry and Moustafa Ahmed

Qualitative analysis of Sudan IV in edible palm oil

Palm oil is one of the most useful vegetable available. Sudan IV dye is used as hue enhancer in palm oil despite the ban as food colorant due to its carcinogenicity and mutagenicity by the International Agency...

Authors: Sampson Saj Andoh, Tarmo Nuutinen, Cheetham Mingle and Matthieu Roussey

Improving the calibration of phase measuring deflectometry by a polynomial representation of the display shape

Phase measuring deflectometry is a highly precise and full field metrology technique for specular surfaces based on the distortion of known reference patterns observed as a reflection at the surface under test...

Authors: Jonas Bartsch, Michael Kalms and Ralf B. Bergmann

Nano-structured transmissive spectral filter matrix based on guided-mode resonances

In this work, a nanostructured guided-mode resonance filter matrix with high transmission efficiency and narrow bandwidth is demonstrated. The developed nano-filter arrays have various usages, e.g., combined w...

Authors: Wenze Wu, Leonard Weber, Peter Hinze, Thomas Weimann, Thorsten Dziomba, Bernd Bodermann, Stefanie Kroker, Joan Daniel Prades, Hutomo Suryo Wasisto and Andreas Waag

Rigid aspheric smoothing tool for mid-spatial frequency errors on aspheric or freeform optical surfaces

In order to remove mid-spatial frequency errors on aspheric and freeform surfaces, we have developed an aspheric smoothing tool which, unusually, is rigid. This has been proved feasible in the special case whe...

Authors: Guoyu Yu, Lunzhe Wu, Xing Su, Yuancheng Li, Ke Wang, Hongyu Li and David Walker

Diffraction of a Gaussian beam near the beam waist

The behavior of the light field near the beam waist has attracted considerable attention due to the studies of the light spin-orbit interaction: it’s manifestation as well as potential applications. Similarly,...

Authors: Evelina A Bibikova, Nazar Al-wassiti and Nataliya D Kundikova

Software Defined Optical Networks (SDON): proposed architecture and comparative analysis

Interface SDN network with Optical network to enhance the capability of current optical network capability to achieve high data rate support to fulfilled 5G and Internet of things (IoT) backbone capacity requi...

Authors: Rakesh Kumar Jha and Burhan Num Mina Llah

The amazing progress of high-power ultrafast thin-disk lasers

Ultrafast lasers continue to be at the forefront of many scientific breakthroughs and technological achievements and progress in the performance of these systems continue to open doors in many new and exciting...

Authors: Clara J. Saraceno, Dirk Sutter, Thomas Metzger and Marwan Abdou Ahmed