相关实验视频

Updated: Jul 28, 2025

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

9.0K

在光电子振荡器中产生一致的双频信号

Shifeng Liu, Changlong Du, Li Yang

    Optics letters
    |June 1, 2023
    PubMed
    概括

    这项研究证明了使用光电子振荡器 (OEO) 产生连贯的双频微波信号. 该方法同步了两个频率,克服了先进信号应用的单频限制.

    更多相关视频

    Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators09:23

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

    Published on: May 30, 2014

    14.6K
    Quasi-light Storage for Optical Data Packets07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

    10.9K

    相关概念视频

    Oscillations In An LC Circuit01:30

    Oscillations In An LC Circuit

    An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
    2.4K
    Generating Electromagnetic Radiations01:10

    Generating Electromagnetic Radiations

    The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
    3.2K
    Cut-off Frequency of BJT01:17

    Cut-off Frequency of BJT

    Cut-off frequencies in Bipolar Junction Transistors (BJTs) mark the transition between the signal's pass band and stop band, influencing their performance in amplifying or attenuating frequencies. These frequencies are crucial for designing BJTs to meet specific operational requirements in electronic circuits.
    Alpha Cut-Off Frequency: Pertinent to the common-base configuration, the alpha cut-off frequency defines the upper-frequency limit at which the current gain, alpha, remains stable. As...
    780
    RLC Circuit as a Damped Oscillator01:30

    RLC Circuit as a Damped Oscillator

    An RLC circuit combines a resistor, inductor, and capacitor, connected in a series or parallel combination.
    Consider a series RLC circuit. Here, the presence of resistance in the circuit leads to energy loss due to joule heating in the resistance. Therefore, the total electromagnetic energy in the circuit is no longer constant and decreases with time. Since the magnitude of charge, current, and potential difference continuously decreases, their oscillations are said to be damped. This is...
    1.1K
    Design Example: Underdamped Parallel RLC Circuit01:17

    Design Example: Underdamped Parallel RLC Circuit

    Consider designing an oscillator circuit, a crucial component in various electronic devices and systems. The objective is to create an oscillator circuit with specific characteristics: a damped natural frequency of 4 kHz and a damping factor of 4 radians per second. To accomplish this, a parallel RLC circuit is employed, known for its ability to sustain oscillations at a resonant frequency. In this case, the damping factor is pivotal in achieving the desired performance.
    Starting with a fixed...
    340
    Propagation Speed of Electromagnetic Waves01:30

    Propagation Speed of Electromagnetic Waves

    Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
    3.5K