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Legend Elite Duo
Aug 2007
Coherent Inc.Request Info
SANTA CLARA, Calif., Aug. 27, 2007 -- The new Legend Elite Duo from Coherent Inc. is an integrated ultrafast amplifier that delivers pulse energies over 6 mJ at a 1-kHz repetition rate, according to the manufacturer.

The Legend Elite Duo is a two-stage amplifier. The first stage features the same high-power regenerative amplifier design used in the Legend Elite. The second stage is a simple linear amplifier that uses a thermoelectrically cooled titanium:sapphire crystal. Because both amplifier stages are integrated into one box, the Legend Elite Duo is compact, easy to use and very stable. Also, with a pulse-width capability of less than 40 fs and M² <1.5, the output from the Legend Elite Duo can generate higher intensities than other integrated amplifiers, Coherent said.

LegendEliteDuo.jpgAnd while alternative amplifier systems require two separate, low-power pump lasers, the high-power Evolution-HE laser can pump both amplifier stages. Rated at >45 mJ/pulse, the integrated Evolution-HE from Coherent further enhances the duo’s simplicity and stability, the company said. The Legend Elite Duo, which can be seeded by Coherent's Micra, Mira or Vitesse ultrafast oscillators, is especially useful for applications that require a lot of power.

Examples of where high power provides faster and more precise results include pumping multiple tunable OPAs (optoelectronic pulse amplifiers) for pump-probe photochemistry and in ultrafast spectroscopy techniques such as CARS (coherent anti-Stokes Raman scattering) and fluorescence upconversion.

This high power also allows the Legend Elite Duo to be used as a shared resource, where the output is split in order to power several separate experiments, the company said.

For more information, visit:; e-mail:

Coherent Inc.
5100 Patrick Henry Dr.
Santa Clara, CA 95054
Phone: (408) 764-4000
Fax: (408) 764-4800


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A device that enlarges and strengthens a signal's output without significantly distorting its original waveshape. There are amplifiers for acoustical, optical and electronic signals.
The emission of light or other electromagnetic radiation of longer wavelengths by a substance as a result of the absorption of some other radiation of shorter wavelengths, provided the emission continues only as long as the stimulus producing it is maintained. In other words, fluorescence is the luminescence that persists for less than about 10-8 s after excitation.
The study of chemical reactions stimulated by the properties of light.
The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
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