نتایج جستجو برای: laser stability
تعداد نتایج: 479291 فیلتر نتایج به سال:
Over the past fty years, lasers have become one of the most valuable tools for studying physics. Monochromatic, phase coherent laser light can be used for experiments which were impractical or impossible with traditional light sources. Of course, since the laser’s invention, fundamental limitations on a laser’s freqency stability and phase coherence time have been recognized [1]. Yet, most lase...
We demonstrate the dual-frequency emission of a diode-pumped vertical external-cavity semiconductor laser operating at 852 nm, dedicated to the coherent population trapping of cesium atoms for compact atomic frequency references. It is based on a single laser cavity sustaining the oscillation of two adjacent, cross-polarized, modes. The output power reaches 10 mW on each frequency. The frequenc...
A multimode model of a continuously pumped atom laser is shown to be unstable below a critical value of the scattering length. Above the critical scattering length, the atom laser reaches a steady state, the stability of which increases with pumping. Below this limit the laser does not reach a steady state. This instability results from the competition between gain and loss for the excited stat...
We present an ultra intense laser system with high repetition rate (300 Hz) and good stability (1% RMS shot to shot fluctuation). By focusing the 21fs laser beam down to a 1.6 μm spot with aberration-compensated optics, we demonstrated that a peak intensity of 4×10 W/cm was produced with 2.5 mJ pulse energy. The intensity was confirmed by laser field ionization of argon atoms. With 8 fs pulses,...
The high-power fiber laser is superior to other high-power lasers with a gain medium of solid crystal or gas in all aspects such as beam quality, energy efficiency, space efficiency, stability and reliability, and is getting the major position in laser processing field. Fujikura has grown up high-power fiber laser technologies on the basis of its proprietary optical fiber related technologies, ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید