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Related Concept Videos

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
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
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...
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...
Cascaded Op Amps01:16

Cascaded Op Amps

Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
Muscle Stimulation Frequency01:22

Muscle Stimulation Frequency

The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...

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Related Experiment Video

Updated: Jun 15, 2026

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

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Published on: May 30, 2014

Simultaneous frequency stabilization and injection in a TEA-CO(2) oscillator.

J L Lachambre, G Otis, P Lavigne

    Applied Optics
    |March 4, 2010
    PubMed
    Summary

    A new technique uses one master oscillator for both injection and stabilization in a Transversely Excited Atmospheric Carbon Dioxide (TEA-CO2) laser. This method ensures stable, single-mode, multi-megawatt operation with excellent optical isolation.

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    Area of Science:

    • Optics and Photonics
    • Laser Physics
    • Physical Chemistry

    Background:

    • Transversely Excited Atmospheric Carbon Dioxide (TEA-CO2) lasers are crucial for various applications requiring high-power pulses.
    • Achieving stable, single longitudinal mode (SLM) operation at high power levels presents significant technical challenges.
    • Effective optical isolation is necessary to protect control systems from high-intensity laser pulses.

    Purpose of the Study:

    • To introduce a novel technique for optimizing the performance of TEA-CO2 laser transmitters.
    • To demonstrate a method for integrating injection and stabilization functions using a single master oscillator.
    • To achieve robust and long-term stable single longitudinal mode (SLM) operation at megawatt power levels.

    Main Methods:

    • Implementation of a two-polarization scheme within the TEA-CO2 laser system.
    • Utilizing a single master oscillator for both beam injection and system stabilization.
    • Employing optical isolation to separate the high-power TEA laser pulse from the probing laser beam.

    Main Results:

    • Successful long-term, reproducible single longitudinal mode (SLM) operation was achieved.
    • Megawatt (MW) power levels were consistently maintained during operation.
    • The two-polarization scheme effectively prevented damage or saturation of the control system.

    Conclusions:

    • The described novel technique offers a robust solution for stable SLM operation in high-power TEA-CO2 lasers.
    • The integrated approach simplifies laser system design by combining injection and stabilization functions.
    • The method provides essential optical isolation, enhancing system reliability and longevity.