We demonstrate high-frequency Q-switching of a fiber rod laser with a Single-Crystal Photo-Elastic Modulator (SCPEM) made of a LiTaO₃₋ crystal. This type of photo-elastic modulator can be driven simultaneously with two different eigenmodes to achieve a shorter rise time, which is essential for high-power operation. When operated in the laser cavity, a pulse repetition frequency of 183.6 kHz with an average power of 47 W, a pulse duration of 26 ns, and a peak power of 10.5 kW was achieved.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.20.007415 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
London Dispersion Effects on the Structure and Properties of Nonlinear Optical BiBO Crystal.
Chemphyschem
August 2024
Beijing Centre for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190.
Article Synopsis
- α-BiBO is a significant nonlinear optical material used in harmonic generation and quantum technology, featuring unique properties due to its low symmetry and Bi lone pair arrangement.
- Previous theoretical studies on its optical properties produced inconsistent results by not accounting for London dispersion forces, which help stabilize its structure.
- Recent modifications to the density functional theory (DFT) calculations, incorporating London dispersion corrections, provided accurate predictions of BiBO's structure and enabled precise calculations of its material properties, including high piezoelectric and electro-optic coefficients.
An ultra-compact and efficient acousto-optic modulator based on a thin-film lithium niobate-chalcogenide (ChG) hybrid platform was designed and realized. In this approach, π phase-shift Bragg grating has an ultra-short effective interaction length of only ∼ 300 µm and a compact footprint of 200 × 300 µm. The strong microwave-acoustic coupling and superior photo-elastic property of the ChG allow us to achieve a half-wave voltage of V = 1.
View Article and Find Full Text PDFSpectrally resolved polarization angle across the motional Stark effect spectrum.
Rev Sci Instrum
April 2021
UK Atomic Energy Authority, Abingdon OX14 3DB, United Kingdom.
A new diagnostic technique has been developed that couples a spectrometer and an image-intensified camera into the traditional motional Stark effect (MSE) system on DIII-D. The image-intensified camera syncs with the photo-elastic modulators to spectrally resolve the Stokes parameters across the Stark multiplet. Polarization dependent phase shift, likely from a plasma facing mirror, leads to the spectropolarimeter measuring a variation in the polarization angle across the MSE spectrum of ∼8°.
View Article and Find Full Text PDFImproved motional Stark effect signal processing using fast Fourier transform spectral analysis.
Rev Sci Instrum
March 2021
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
A Fast Fourier Transform (FFT) based method has been developed, which improves the frequency response of the Motional Stark Effect (MSE) system by about a factor of 10 over the conventional analog lock-in method. The method uses fits to rigorously derived analytic expressions for the FFT spectral components of the MSE signal to accurately obtain the amplitudes and phases of the 2f and 2f photo-elastic modulator (PEM) frequencies that encode the polarization angle. Since no frequency filtering is used in the FFT method, the frequency response is limited by fundamental measurement properties: the frequency response of the detector, photon statistics, sample rate, and the ability to resolve the spectral components.
View Article and Find Full Text PDFDual-Channel Stopped-Flow Apparatus for Simultaneous Fluorescence, Anisotropy, and FRET Kinetic Data Acquisition for Binary and Ternary Biological Complexes.
Biosensors (Basel)
November 2020
Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA.
The Stopped-Flow apparatus (SF) tracks molecular events by mixing the reactants in sub-millisecond regimes. The reaction of intrinsically or extrinsically labeled biomolecules can be monitored by recording the fluorescence, (), anisotropy, (), polarization, (), or FRET, (), traces at nanomolar concentrations. These kinetic measurements are critical to elucidate reaction mechanisms, structural information, and even thermodynamics.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!