Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Design Example: Underdamped Parallel RLC Circuit01:17

Design Example: Underdamped Parallel RLC Circuit

340
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
Oscillations In An LC Circuit01:30

Oscillations In An LC Circuit

2.4K
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
Non-ohmic Devices00:51

Non-ohmic Devices

1.1K
In most substances, the current flow is proportional to the voltage applied to it. A simple relationship between the values of current, voltage, and resistance is known as Ohm's law. Nonohmic devices do not exhibit a linear relationship between voltage and current. One such device is the semiconducting circuit element known as a diode. A diode is a circuit device that allows current flow in only one direction.
Consider a simple circuit consisting of a battery, a diode, and a resistor. A...
1.1K
Inverting and Non-inverting OpAmps01:20

Inverting and Non-inverting OpAmps

831
In an inverting amplifier, the input voltage is connected through a resistor to the inverting terminal. Meanwhile, the non-inverting terminal is grounded and a feedback resistor is established between the inverting and output terminal, as depicted in Figure 1.
831
Biasing of FET01:22

Biasing of FET

330
Biasing a Junction Field Effect Transistor (JFET) is crucial for setting operational parameters and ensuring efficient functioning in electronic circuits. JFETs are characterized by using a single carrier type in N-channel or P-channel configurations, where the channel is surrounded by PN junctions. These junctions are central to the device's ability to control current flow.
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the...
330
Second-order Op Amp Circuits01:19

Second-order Op Amp Circuits

379
Implementing second-order low-pass filters in audio systems is crucial in refining audio signals by eliminating undesirable high-frequency noise. These filters typically involve second-order op-amp circuits configured as voltage followers, encompassing two nodes with distinct storage elements.
The analysis of such circuits follows a systematic approach, similar to the second-order RLC circuits. In practical scenarios, bulky inductors are rarely employed due to their size and weight. This means...
379

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Practical solution of a compact system with a higher-order mode for PDH laser frequency stabilization.

Applied optics·2026
Same author

NPRO laser feedback interferometer with improved sensitivity.

Optics letters·2026
Same author

Ultra-low-phase-noise photonic microwave generation and high-precision laser frequency determination with an NPRO dual-frequency laser.

Optics letters·2025
Same author

Intracavity dual-frequency power locking for a high-stable NPRO laser.

Optics letters·2025
Same author

An advanced digital controller with automatic design for laser frequency stabilization in space.

The Review of scientific instruments·2025
Same author

Low-noise high-power dual-frequency MOPA laser with an NPRO seed.

Optics express·2025

Related Experiment Video

Updated: Jul 28, 2025

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

14.6K

Unidirectional operation criterion in monolithic nonplanar ring oscillators.

Guobin Zhou, Rong Zhu, Chunzhao Ma

    Optics Letters
    |June 1, 2023
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed a new method to precisely measure magnetic field effects in monolithic nonplanar ring oscillators (NPROs). This advancement enables unidirectional single-frequency lasing with significantly lower magnetic field requirements.

    More Related Videos

    Fabrication and Testing of Microfluidic Optomechanical Oscillators
    09:10

    Fabrication and Testing of Microfluidic Optomechanical Oscillators

    Published on: May 29, 2014

    12.2K
    Fabrication and Characterization of Superconducting Resonators
    10:26

    Fabrication and Characterization of Superconducting Resonators

    Published on: May 21, 2016

    11.4K

    Related Experiment Videos

    Last Updated: Jul 28, 2025

    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

    14.6K
    Fabrication and Testing of Microfluidic Optomechanical Oscillators
    09:10

    Fabrication and Testing of Microfluidic Optomechanical Oscillators

    Published on: May 29, 2014

    12.2K
    Fabrication and Characterization of Superconducting Resonators
    10:26

    Fabrication and Characterization of Superconducting Resonators

    Published on: May 21, 2016

    11.4K

    Area of Science:

    • Optics and Photonics
    • Laser Physics
    • Materials Science

    Background:

    • Monolithic nonplanar ring oscillators (NPROs) exhibit unidirectional single-frequency lasing under magnetic fields due to polarization-dependent losses.
    • Previous estimations of minimum loss differences required for unidirectional operation were empirically determined and lacked precise verification due to non-uniform magnetic fields.

    Purpose of the Study:

    • To develop and validate a method for accurately resolving non-uniform magnetic fields within NPROs.
    • To precisely determine the minimum loss differences required for unidirectional single-frequency lasing in NPROs.
    • To reduce the magnetic field intensity requirements for NPRO laser design.

    Main Methods:

    • Combined finite-element analysis (FEA) with experimental verification to map the non-uniform magnetic field.
    • Integrated the resolved magnetic field data into eigenpolarization theory to calculate polarization-dependent loss differences via path integration.
    • Identified the critical point for bidirectional lasing onset using relative amplitude noise (RAN) and heterodyne beat signals between clockwise (CW) and counterclockwise (CCW) modes.

    Main Results:

    • Demonstrated that unidirectional operation is achievable with loss differences as low as 0.0001% and 0.0003% for NPROs with out-of-plane angles of 90° and 45°, respectively.
    • Achieved an order-of-magnitude increase in the precision of loss difference determination for unidirectional single-frequency lasing.
    • Validated the proposed method for resolving magnetic field distributions and their impact on NPRO performance.

    Conclusions:

    • The developed method accurately quantifies the magnetic field's influence on NPRO eigenpolarization losses.
    • Unidirectional single-frequency lasing in NPROs can be achieved with significantly lower magnetic field strengths than previously thought.
    • This research provides a pathway for designing more efficient NPROs with reduced magnetic field requirements.