Doppler-free three-photon coherence in Doppler-broadened diamond-type atomic system

Related Experiment Video

Updated: Jan 30, 2026

Functional Transcranial Doppler Ultrasound for Monitoring Cerebral Blood Flow
09:41

Functional Transcranial Doppler Ultrasound for Monitoring Cerebral Blood Flow

Published on: March 15, 2021

9.0K

Yoon-Seok Lee, Han Seb Moon

    Optics Express
    |April 7, 2017
    PubMed

    More Related Videos

    Blood Flow Imaging with Ultrafast Doppler05:57

    Blood Flow Imaging with Ultrafast Doppler

    Published on: October 14, 2020

    8.5K
    Doppler Optical Coherence Tomography of Retinal Circulation10:46

    Doppler Optical Coherence Tomography of Retinal Circulation

    Published on: September 18, 2012

    19.2K

    Related Concept Videos

    Doppler Effect - I00:56

    Doppler Effect - I

    The Doppler effect and Doppler shift were named after the Austrian physicist and mathematician Christian Johann Doppler in 1842, who conducted experiments with both moving sources and moving observers. Consider an observer standing on a street corner, observing an ambulance with a siren sound passing by at a constant speed. The observer experiences two characteristic changes in the sound of the siren. Initially, the sound increases in loudness as the ambulance approaches and decreases in...
    6.4K
    Doppler Effect - II01:05

    Doppler Effect - II

    The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
    4.7K
    Assessing Blood pressure using a doppler ultrasound01:19

    Assessing Blood pressure using a doppler ultrasound

    To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
    Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
    Preparation of Equipment:
    2.5K
    Atomic Nuclei: Types of Nuclear Relaxation01:28

    Atomic Nuclei: Types of Nuclear Relaxation

    Nuclear relaxation restores the equilibrium population imbalance and can occur via spin–lattice or spin–spin mechanisms, which are first-order exponential decay processes.
    In spin–lattice or longitudinal relaxation, the excited spins exchange energy with the surrounding lattice as they return to the lower energy level. Among several mechanisms that contribute to spin–lattice relaxation, magnetic dipolar interactions are significant. Here, the excited nucleus transfers...
    972
    Atomic Structure01:33

    Atomic Structure

    Overview
    209.1K
    Atomic Mass01:52

    Atomic Mass

    Atoms — and the protons, neutrons, and electrons that compose them — are extremely small. For example, a carbon atom weighs less than 2 × 10−23 g. When describing the properties of tiny objects such as atoms, we use appropriately small units of measure, such as the atomic mass unit (amu). The amu was originally defined based on hydrogen, the lightest element, then later in terms of oxygen. Since 1961, it has been defined with regard to the most abundant isotope of carbon, atoms of which...
    70.1K