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Verdi G7 Laser
Apr 2010
Coherent Inc.Request Info
SANTA CLARA, Calif., April 27, 2010 — Coherent Inc. has released the Verdi G7, the highest power level yet for the company’s Verdi G family of low-noise CW lasers based on next-generation optically pumped semiconductor laser (OPSL) technology.

Intended for pumping Ti:Sapphire laser systems, the new device delivers high reliability and a low noise of < 0.03% rms. Additionally, it delivers a minimum power of 7 W in a TEM00 output beam.

The gain medium in OPSLs is a semiconductor chip which has a near-zero upper state lifetime, eliminating the “green noise” component of laser output noise found in 532-nm diode-pumped solid-state lasers operating on multiple longitudinal modes.

Because it does not suffer from thermal lensing effects, its output power can be smoothly adjusted with no effects on beam quality, divergence or beam pointing. In addition, its efficient design means it uses only a single diode array.

It is suitable for pumping ultrafast and CW Ti:Sapphire laser systems for applications in spectroscopy, pump-probe dynamics and materials research.

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A two-electrode device with an anode and a cathode that passes current in only one direction. It may be designed as an electron tube or as a semiconductor device.
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.
longitudinal mode
A waveform that can oscillate along the length of the laser cavity.
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.
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