News | November 25, 2013

Coherent Introduces Highest Power Green OPSL Pump Laser Available

Coherent Verdi G-20.jpg

New Verdi G laser fromCoherent, Inc.(Santa Clara, CA) now offer the highest powers available from scientific-grade, 532 nm, CW green laser.  Specifically, the new Verdi G20 products deliver 20 Watts of low noise output, yet are identical in form and fit to earlier, lower power Verdi G products; thelaser head measures only 214 x 98 x 68 mm (8.43 x 3.86 x 2.68 in.). They also deliver the same low noise, low cost of ownership, long lifetime, and superior beam characteristics of previous models. This includes a vertically (> 100:1) polarized output beam with M2< 1.1, and < 0.02% total noise measured over a very wide frequency range (10 Hz to 100 MHz), and they are backed by a 2 year/10,000 hour warranty.

Coherent Verdi G lasers utilize Coherent’s next-generation, optically pumped semiconductor laser (OPSL) technology that is characterized by power and wavelength scalability. Moreover, OPSL technology does not suffer from thermal lensing issues, in contrast to all competitive lasers based on older diode-pumped solid-state (DPSS) technology. This enables laser output power to be smoothly adjusted from full power down to 500 mW, with no effect whatsoever on the output beam parameters. This is useful for both end users and OEMs for performing downstream alignment tests at low power, for example. The complete absence of “green noise” in OPSL technology enables Verdi G’s low-noise output that is ideal for ultra-demanding applications such as pumping carrier envelope phase (CEP) stabilized systems.

The new Verdi G20 lasers are intended primarily for pumping titanium: sapphire (Ti:S) continuous-wave, mode-locked and high repetition rate oscillators and amplifiers. Their high power enables a single Verdi G laser to simultaneously pump both a Ti:S oscillator and a high-repetition regenerative amplifier, such as the Coherent RegA series, or to pump two Ti:S oscillators with sufficient power to each drive a tunable optical parametric oscillator (OPO).

About Coherent, Inc.
Founded in 1966, Coherent, Inc. is a world leader in providing photonics based solutions to the commercial and scientific research markets, and is part of the Standard & Poor’s SmallCap 600 Index and the Russell 2000. For more information, visit

SOURCE: Coherent, Inc.