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Parallel Resonance

Parallel Resonance

The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:

Carrier Generation and Recombination

Carrier Generation and Recombination

Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...

Design Example: Underdamped Parallel RLC Circuit

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...

Characteristics of Series Resonant Circuit

Characteristics of Series Resonant Circuit

Series resonance occurs in a circuit containing inductive (L), capacitive (C), and resistive (R) elements connected sequentially. At the resonance frequency, the inductive and capacitive reactances are equal in magnitude but opposite in sign, effectively canceling each other. This causes the circuit's impedance is minimal, primarily determined by the resistance R. The resonant frequency of an RLC circuit is defined as:

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

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

Published on: July 12, 2017

Efficient second-harmonic generation using a semiconductor tapered amplifier in a coupled ring-resonator geometry.

Danilo Skoczowsky¹, Andreas Jechow, Ralf Menzel

¹Universität Potsdam, Institut für Physik und Astronomie, Lehrstuhl für Photonik, Potsdam, Germany. danilo.skoczowsky@uni-potsdam.de

|January 19, 2010

Summary

This summary is machine-generated.

This study introduces an efficient method for second-harmonic generation using diode lasers. A novel optical setup achieved stable blue light generation with high conversion efficiency.

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Area of Science:

Laser physics
Nonlinear optics
Materials science

Background:

Second-harmonic generation (SHG) is crucial for frequency conversion.
Diode lasers offer compact and efficient light sources.
Efficient SHG with diode lasers requires precise frequency control and high-power operation.

Purpose of the Study:

To develop an efficient and stable second-harmonic generation system using diode lasers.
To demonstrate purely optical frequency locking for enhanced performance.
To achieve high-power blue light generation at 488 nm.

Main Methods:

Utilizing a tapered amplifier in a ring resonator coupled to a secondary enhancement resonator.
Incorporating a periodically poled lithium niobate (PPLN) crystal within the enhancement cavity.
Implementing a purely optical frequency locking technique for stable laser emission.

Main Results:

Stable, single-frequency operation of the diode laser system was achieved.
Blue light at 488 nm with 310 mW output power was generated.
An optical-to-optical conversion efficiency of 18% was obtained.

Conclusions:

The presented approach offers an efficient method for diode-laser-based second-harmonic generation.
Purely optical frequency locking ensures stable and high-performance operation.
This technique holds promise for various applications requiring efficient blue light sources.