منابع مشابه
Frequency shifting in free-electron lasers
Frequency shifting in free-electron laser (FEL) oscillators and amplifiers is investigated theoretically and numerically. The analysis includes frequency shifts from the resonant FEL interaction and the nonresonant beam dielectric. Expressions for the frequency shift in a microwave amplifier with time-dependent beam energy and current are derived and found to be in good agreement with experimen...
متن کاملFrequency comb swept lasers.
We demonstrate a frequency comb (FC) swept laser and a frequency comb Fourier domain mode locked (FC-FDML) laser for applications in optical coherence tomography (OCT). The fiber-based FC swept lasers operate at a sweep rate of 1kHz and 120kHz, respectively over a 135nm tuning range centered at 1310nm with average output powers of 50mW. A 25GHz free spectral range frequency comb filter in the s...
متن کاملPhotonic Crystal Frequency Control in Terahertz Lasers
A. Benz1, Ch. Deutsch1, G. Fasching1, K. Unterrainer1, A. M. Andrews2, P. Klang2, W. Schrenk2, and G. Strasser2 1 Photonics Institute and Center for Microand Nanostructures, Vienna University of Technology, Gusshausstrasse 29/387, 1040 Vienna, Austria 2 Institute of Solid-State Electronics and Center for Microand Nanostructures, Vienna University of Technology, Floragasse 7/362, 1040 Vienna, Au...
متن کاملDual-polarization frequency reuse with frequency band shifting allocation
Spectrum is a limited and precious resource in wireless communications. Effective spectrum utilization becomes more and more important because of the expeditious increase of demand for wireless communications. In principle, the dual-polarization frequency reuse system, which employs two orthogonally polarized electromagnetic waves to carry information, can double the system capacity. However, t...
متن کاملOpto-mechanical frequency shifting of scattered light
Light being scattered back from external surfaces or optical components can affect the sensitivity of optical measurement systems such as interferometers. By modulating the optical path length in front of a critical optical component the noise contributions due to the scattered light can be shifted out of the frequency band of interest. An opto-mechanical phase shifter has been designed for thi...
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ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 1994
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.870546