Coherent Expands Low-Noise Green Pump Laser Product Line

Coherent Inc. (Santa Clara, CA) (Nasdaq: COHR) has launched the Verdi™ G7, delivering the highest power level yet for the company’s unique Verdi G family of low-noise CW lasers based on next-generation optically pumped semiconductor laser (OPSL) technology.  The Verdi G7 provides a minimum power of 7 Watts in a TEM00 output beam.  Intended principally for pumping Ti:Sapphire laser systems, this new laser delivers higher reliability, lower cost of ownership and lower noise (<0.03% rms) than competitive multi-longitudinal mode lasers based on diode-pumped solid-state (DPSS) technology.  The reliability of all Verdi G lasers is underlined by a comprehensive 2 year/10,000 hour warranty.

In OPSLs, the gain medium is a semiconductor chip which has a near-zero upper state lifetime.  This eliminates the “green noise” component of laser output noise that is found in 532 nm DPSS lasers operating on multiple longitudinal modes.  So Verdi G lasers deliver exceptionally low noise yet without single-mode operation.  And because the gain medium is a thin chip that is cooled from its rear surface, it does not suffer from thermal lensing effects.  As a result, the output power of Verdi G lasers can be smoothly adjusted with no effects on beam quality, divergence or beam pointing.  Plus the efficiency of the OPSL design means these Verdi G lasers use only a single diode array, significantly lowering the long-term cost of ownership.

The Verdi G7 is ideal for pumping ultrafast and CW Ti:Sapphire laser systems for applications in spectroscopy, pump-probe dynamics and materials research.  OPSL technology is already field-proven in these applications as the integrated pump laser in Coherent’s state-of-the-art Mantis™ – a one-box femtosecond oscillator.

Founded in 1966, Coherent, Inc. is a Russell 2000 Index company and a world leader in providing laser-based solutions to the commercial and scientific research markets.  Please direct any questions to Brandon Morioka, product line manager, at (408) 764-4373.  For more information about Coherent, including product and financial updates, visit our website at

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Steven Glover is a proud member of the LIA staff. When he is not at work he is actively involved in several charitable efforts.
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