Editorial Contact: Brandon Morioka
(408) 764-4373
For Release: 01/27/2009
No. 1181

Coherent Releases High Stability Infrared Verdi Laser

Santa Clara, California, January 27, 2009

Coherent Inc. (Santa Clara, CA) (Nasdaq: COHR) has launched an infrared version of the company’s award-winning Verdi™ family of solid state lasers, delivering 25 Watts of single-mode CW output at 1064 nm. The new Verdi™ IR 25 laser has the same diode-pumped, solid-state (Nd:YVO4) unidirectional ring-resonator design as is standard in all industry-leading green Verdi lasers.  Its single-longitudinal-mode output has uniquely low-noise (< 0.04% RMS),  narrow-linewidth (< 2.5 MHz FWHM), and a coherence length greater than 60 meters.  In addition, a piezo-actuated resonator mirror enables the output frequency to be tuned over a range > 3.2 GHz and/or to be locked to an external reference cavity.  The bandwidth for piezo control is DC to 20 kHz.

Outstanding beam-pointing stability (<2rad/oC) and beam quality (M2<1.1) eliminate the need for frequent adjustments of the beam and simplify laser alignment.   Moreover, the natural stability of this single-mode design means that the output power can be smoothly varied over a 15W to 25W range without mode-hops.  No other CW infrared laser offers this combination of power and stability.  In addition, the output is linearly polarized with an extinction ratio greater than 100:1.

Applications for the Verdi IR 25 include optical trapping of atoms, where its low noise and mode-hop-free operation enables atom trapping for extended times.  The high output power means a single Verdi IR laser can generate several traps simultaneously.  Other applications include optical tweezers, optical/semiconductor material development and remote optical sensing.  In addition, the low noise and high power make the Verdi IR 25 an ideal source for harmonic generation and pumping mid-infrared optical parametric oscillators (OPO) for high-resolution molecular spectroscopy.

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. For more information about Coherent, including product and financial updates, visit our website at www.Coherent.com.

Coherent Italia
Via Borgese, 14
20154 Milano
Tel. +39 02 34 530 214
Fax +39 02 34 934 165
E-mail: coherent.italia@coherent.com

07.09.2010 - http://www.coherent.it/newsletter-archiv/press-release-january-27-2009-high-stability-ir-verdi-laser/