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Страница 1 од 120 резултати
Self-aligned extended-cavity diode laser stabilized by the Zeeman effect on the cesium D2 line.
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An extended-cavity diode laser at 852 nm has been built especially for the purpose of cooling and probing cesium atoms. It is a compact, self-aligned, and continuously tunable laser source having a 100-kHz linewidth and 60-mW output power. The electronic control of the laser frequency by the
Measurement of dynamic end-to-end cavity phase shifts in cesium-fountain frequency standards.
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We have measured a previously unobserved systematic frequency shift in our cesium-fountain frequency standard, NIST-F1. This shift, predicted theoretically previously, mimics the well-known end-to-end phase shift in atomic beam standards when synchronous thermal transients are present. Detuning the
External-cavity broad-area laser diode operating on the D(1) line of cesium.
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We present an external-cavity laser diode characterized by an intracavity cylinder lens to compensate for the astigmatism of the laser. This setup was applied to a broad-area laser diode operating on the D(1) line of the cesium atom at 894 nm, yielding single-mode emission. A saturated-absorption
Influence of the cavity size of water-soluble cryptophanes on their binding properties for cesium and thallium cations.
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The binding properties of water-soluble cryptophane 1 toward cesium and thallium cations, in basic solution, have recently been reported. In this Article, we show that water-soluble cryptophane-222 (2), cryptophane-223 (3), and cryptophane-233 (4), bearing zero, one, and two propylenedioxy linkers,
Laser spectroscopy of molecular cesium near 1064 nm enhanced by a Fabry-Perot cavity.
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We made Doppler-broadened and Doppler-free absorption measurement of a cesium cell that was placed inside an external Fabry-Perot ring cavity, using a Nd:YAG laser. We achieved a cavity finesse of ~85, and the sensitivity of the measurement was improved by as much as 26.5 with respect to single-pass
Pulsed output generation in a diode-pumped cesium vapor laser using the cavity dumping technique.
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Cavity dumping is demonstrated in a diode-pumped alkali laser (DPAL) using a Pockels cell. We generated a 14 ns FWHM pulse with a peak power of 77 W from a 3.1 W continuous wave cesium DPAL. Due to the limitation of the high-voltage power supply, the pulse repetition rate is restricted to 100 Hz.
Generation of a twin beam at the cesium line and telecom wavelength by cavity phase matching.
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Cavity phase matching has been recently demonstrated as a phase-matching method for efficient nonlinear frequency conversion in a microcavity. Here we extend it to the Type I configuration using a sub-coherent-length optical parametric oscillator consisting of an MgO-doped lithium niobate crystal
Low-frequency wavelength modulation spectroscopy with D2 transition of atomic cesium by use of an external-cavity diode laser.
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Low-frequency wavelength modulation spectroscopy is acquired with an external-cavity diode laser. The wavelength modulation is achieved with voltage tuning by means of scanning with the piezoelectric stepper motor, which rotates the end mirror in the laser cavity. With optimum 1-kHz frequency
Behavior of cesium and thallium cations inside a calixarene cavity as probed by nuclear spin relaxation. Evidence of cation-pi interactions in water.
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We have studied the complexes formed between the p-sulfonatocalix[4]arene and cesium or thallium metal cation, first by carbon-13 longitudinal relaxation of the calixarene molecule at two values of the magnetic field B(0). From the longitudinal relaxation times of an aromatic carbon directly bonded
Location of a metallic cation complexed in a calixarene cavity as determined by calixarene 13C spin relaxation. application to cesium and thallium complexed by p-sulfonatocalix[4]arene in water.
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This study deals with the exact location of the monovalent metal cations Cs(+) and Tl(+) which are complexed by the p-sulfonatocalix[4]arene in water. This determination rests on the measurements of longitudinal relaxation times of carbon-13 not directly bonded to protons. The difference between the
Surgical Technique and Clinically Relevant Resection Cavity Dynamics Following Implantation of Cesium-131 (Cs-131) Brachytherapy in Patients With Brain Metastases.
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Cesium-131 (Cs-131) brachytherapy is used to reduce local recurrence of resected brain metastases. In order to ensure dose homogeneity and reduce risk of radiation necrosis, inter-seed distance and cavity volume must remain stable during delivery.
To investigate the efficacy of the
Which types of clay minerals fix cesium ions effectively? the "cavity-charge matching effect".
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How can radioactive Cs+ ions be removed from aqueous solution? From this perspective, the adsorption of Cs+ was investigated by using five types of clay minerals possessing different charge exchange capacities. The fixation ability for Cs+ depended on the charge exchange capacity of the clay
Cesium atoms bouncing in a stable gravitational cavity.
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A matched-pair analysis of clinical outcomes after intracavitary cesium-131 brachytherapy versus stereotactic radiosurgery for resected brain metastases.
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1.6 μm dissipative soliton fiber laser mode-locked by cesium lead halide perovskite quantum dots.
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We demonstrate a stable, picosecond fiber laser mode-locked by cesium lead halide perovskite quantum dots (CsPbBr3-QDs). The saturable absorber is produced by depositing the CsPbBr3-QDs nanocrystals onto the endface of a fiber ferrule through light pressure. A balanced two-detector measurement shows
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