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Related Concept Videos

Diode: Forward bias01:20

Diode: Forward bias

In semiconductor devices, diodes play a crucial role in directing current flow, and its operation is primarily categorized into forward bias and reverse bias. A diode is said to be forward-biased when its p-type region is connected to the positive terminal of a battery and its n-type region is linked to the negative terminal. This configuration reduces the potential barrier within the diode, allowing current to flow easily from the p to the n-type region.
The behavior of a diode in forward bias...

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Related Experiment Video

Updated: Jun 19, 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

Diode-pumped optical parametric oscillator.

A R Geiger, H Hemmati, W H Farr

    Optics Letters
    |October 30, 2009
    PubMed
    Summary
    This summary is machine-generated.

    This study demonstrates diode-pumped optical parametric oscillation in a single Nd:MgO:LiNbO(3) crystal. This novel approach utilizes a diode laser array to achieve efficient parametric oscillation for potential applications in tunable light generation.

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    Last Updated: Jun 19, 2026

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

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    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
    10:17

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

    Published on: July 12, 2017

    Area of Science:

    • Nonlinear Optics
    • Laser Physics
    • Materials Science

    Background:

    • Optical parametric oscillation (OPO) is a key technique for generating tunable laser light.
    • Previous OPO systems often require multiple nonlinear crystals and complex setups.
    • Diode-pumped solid-state lasers offer advantages in efficiency and compactness.

    Purpose of the Study:

    • To demonstrate diode-pumped optical parametric oscillation (OPO) for the first time in a single nonlinear crystal.
    • To investigate the feasibility of using a Nd:MgO:LiNbO(3) crystal for both laser oscillation and parametric generation.
    • To characterize the performance of this novel OPO system.

    Main Methods:

    • A semiconductor diode laser array at 812 nm was used for pumping.
    • Nd(3+) ions within the Nd:MgO:LiNbO(3) crystal absorbed the pump to generate 1084-nm laser oscillation.
    • Internal Q-switching of the 1084-nm laser initiated optical parametric oscillation in the LiNbO(3) host.
    • The nonlinear crystal was angle-cut at 46.5 degrees for optimal parametric generation.

    Main Results:

    • Successful demonstration of diode-pumped OPO in a single Nd:MgO:LiNbO(3) crystal.
    • Oscillation threshold for the 1084-nm laser pump was approximately 1 mJ.
    • Produced 0.5-mJ output at a 3400-nm signal wavelength.
    • Achieved OPO using an 80-ns pulse length and a 1-mm-diameter beam.

    Conclusions:

    • A single-crystal, diode-pumped optical parametric oscillator has been successfully demonstrated.
    • This approach offers a simplified and potentially more efficient method for generating tunable infrared light.
    • The results pave the way for compact and robust tunable laser sources.