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関連する概念動画

Photoelectric Effect02:26

Photoelectric Effect

30.7K
When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
30.7K
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview01:02

Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview

7.8K
Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material,  molecules absorb light depending on the energy required for...
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UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

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In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
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Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

9.1K
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
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Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

2.0K
Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
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関連する実験動画

Updated: May 1, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

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空間モード分解のためのユニバーサルフォトニックプロセッサ

Varun Sharma1,2, Dorian Brandmüller1,3, Johannes Bütow1,3

  • 1Institute of Physics, University of Graz, NAWI Graz, Graz, Austria.

Nature communications
|August 26, 2025
PubMed
まとめ
この要約は機械生成です。

この研究は,空間モード分解のための新しい光学統合回路を導入し,高度な光学情報処理と通信のための光の性質の正確な測定を可能にします.

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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Generation and Coherent Control of Pulsed Quantum Frequency Combs

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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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関連する実験動画

Last Updated: May 1, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

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Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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科学分野:

  • 光学について
  • 光学情報処理
  • 統合光学

背景:

  • 効率的な光学情報処理は 光の特性を操作することに依存しています 光の強度,相,極化です
  • これらの特性を光学アプリケーションで利用するには,正確な空間モード分解が不可欠です.

研究 の 目的:

  • 再構成可能な光学集積回路を用いた新しいモダル分解技術を開発する.
  • 構成する空間的モードとその相対的な相を正確に定量化できるようにする.

主な方法:

  • 16ピクセルの再構成可能な光学集積回路が空間モード分解器としてプログラムされました.
  • この装置は,任意の空間的モードを ラゲール・ガウスベースに分解します.
  • 新しい入力インターフェースは,偏振分解を円形の偏振状態に容易にします.

主要な成果:

  • フォトニック・インテグレーテッド・サーキットは,相対モードの貢献と相を成功裏に識別し,定量化します.
  • この装置は,統合された光学情報処理のための新しいアプローチを示しています.
  • このシステムは,入力ビームの偏振を円形の偏振ベースに分解します.

結論:

  • この再構成可能な光学集積回路は 空間モードの分解を大幅に改善します
  • この技術は,光通信,顕微鏡,そしてそれ以上の分野で幅広い潜在的応用があります.
  • この研究は,光学情報処理のための統合フォトニクスにおける大きな一歩を示しています.