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Ti:Sapphire Oscillator

Photonics Spectra
Jul 2010
Spectra-Physics ViennaRequest Info
Femtolasers Produktions GmbH has unveiled the FemtoSource Rainbow ultrafast Ti:sapphire oscillator with Carrier Envelope Phase (CEP) stabilized short optical pulses and multiple simultaneous outputs centered at 800 and 1030 nm, with 100% mutual synchronization guaranteed. Bandwidth at −10 dB is >260 nm, average mode-locked output power is >200 mW, and pulse energy and peak power at 78 MHz are >2.2 nJ and >350 kW, respectively. Beam diameter (1/e2) is <2.5 mm, beam divergence is <2 mrad, horizontal polarization is >100:1, and noise, measured from 10 Hz to 100 kHz, is <0.1% rms. Power stability is ±1%. Applications include amplifier/optical phase conjugation, power amplifier seeding, coherent terahertz generation, optical coherence tomography, multiphoton microscopy and time-resolved spectroscopy.


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beam diameter
1. Calculated distance between two exactly opposed points on a beam at a chosen fraction of peak power (typically 1/e2). 2. The diameter of a circular aperture that will pass a specified percentage (usually 90) of the total beam energy.
1. In optics, the bending of rays away from each other. 2. In lasers, the spreading of a laser beam with increased distance from the exit aperture. Also called beam spread. 3. In a binocular instrument, the horizontal angular disparity between the two lines of sight.
The unwanted and unpredictable fluctuations that distort a received signal and hence tend to obscure the desired message. Noise disturbances, which may be generated in the devices of a communications system or which may enter the system from the outside, limit the range of the system and place requirements on the signal power necessary to ensure good reception.
With respect to light radiation, the restriction of the vibrations of the magnetic or electric field vector to a single plane. In a beam of electromagnetic radiation, the polarization direction is the direction of the electric field vector (with no distinction between positive and negative as the field oscillates back and forth). The polarization vector is always in the plane at right angles to the beam direction. Near some given stationary point in space the polarization direction in the beam...
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