Results 31 to 40 of about 137,045 (307)

Tunable Add–Drop Filter With Hollow Bottlelike Microresonators

IEEE Photonics Journal, 2018
In this paper, we report the narrow-band tunable add–drop filter (ADF) based on the hollow bottlelike microresonator with two taper fibers corresponding to the bus and drop waveguides.
Zhong-Hao Zhou, Yuan Chen, Zhen Shen, Chang-Ling Zou, Guang-Can Guo, Chun-Hua Dong   +5 more
doaj   +1 more source

Wavelength-Tunable Kerr-Lens Mode-Locked Femtosecond Cr:ZnS Laser With a ∼300-nm Tuning Range From 2.2 to 2.5 μm

Frontiers in Physics, 2022
Tunable 2∼3-μm femtosecond lasers are of high interest in various applications, such as medical diagnostics and molecular spectroscopy. Cr:ZnSe/ZnS is extremely suited for broadband tunable femtosecond lasers due to its excellent emission bands.
Qing Wang, Qing Wang, Qing Wang, Runyu Wang, Runyu Wang, Runyu Wang, Fan Yang, Fan Yang, Fan Yang, Yan Li, Yan Li, Yan Li   +11 more
doaj   +1 more source

Taurus Tunable Filter -- seven years of observing

, 2003
The Taurus Tunable Filter (TTF) has now been in regular use for seven years on the Anglo-Australian Telescope. The instrument was also used for three years (1996--1999) on the William Herschel Telescope.
Bland-Hawthorn, Bland-Hawthorn, Bland-Hawthorn, Bland-Hawthorn, Cecil, Cecil, Cepa, Cianci, Cianci, Cianci, Ferguson, Glazebrook, Heckman, Hewett, Higdon, Hippelein, J. Bland-Hawthorn, Jaffe, Jones, Knapp, L. Kedziora-Chudczer, Meurer, Meurer, Miller, Miller, Riddick, Ryder, Ryder, Schuberth, Shopbell, van Gorkom, Veilleux, Veilleux, Veilleux, Veilleux, Zurita   +35 more
core   +2 more sources

Continuously Tunable and Bandwidth Variable Optical Notch/Band-Pass Filters Over 500 nm Spectral Range Using Cholesteric Liquid Crystals

IEEE Photonics Journal, 2019
We report continuously tunable and bandwidth variable optical notch and band-pass filters created by combining four left- and right-handed circular cholesteric liquid crystal cells without extra optical components. Filter performance was greatly improved
Mi-Yun Jeong, Keumcheol Kwak
doaj   +1 more source

Tunable photonic crystal filter for terahertz frequency applications [PDF]

, 2003
In this Paper we investigate a tunable metallic photonic crystal filter with a novel mechanical tuning method, suitable for use in terahertz frequency applications.
Blaikie, R.J., Cumming, D.R.S., Drysdale, T.D.   +2 more
core   +1 more source

Continuously Tunable Microwave Photonic Notch Filter With a Complex Coefficient

IEEE Photonics Journal, 2011
This paper presents a continuously tunable microwave photonic notch filter with a complex coefficient. The complex coefficient is generated using a radio-frequency (RF) phase shifter that consists of a dual-parallel Mach-Zehnder modulator (DPMZM) and a ...
Wei Li, Ning Hua Zhu, Li Xian Wang
doaj   +1 more source

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Proposed acousto-optic filter [PDF]

, 1969
Narrow band optical filter is electronically tunable over a large wavelength region.
Harris, S. E.
core   +1 more source

Frequency tunability of solid-core photonic crystal fibers filled with nanoparticle-doped liquid crystals [PDF]

, 2009
We infiltrate liquid crystals doped with BaTiO3 nanoparticles in a photonic crystal fiber and compare the measured transmission spectrum with the one achieved without dopant.
Alkeskjold, Anders Bjarklev, Du, Eggleton, Gauza, Gauza, Haakestad, Haiqing Xianyu, Kaczmarek, Kerbage, Kiely, Kobayashi, Kundu, Lara Scolari, Lars Eskildsen, Larsen, Lei Zhai, Li, Litchinitser, Noordegraaf, Noordegraaf, Reznikov, Russell, Scolari, Scolari, Sebastian Gauza, Shin–Tson Wu, Shiraishi, Thomas T. Alkeskjold, Wolinski, Wolinski, Wolinski, Wu, Wu, Zografopoulos   +34 more
core   +3 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source