Solid State Laser offers 15-25 W output power range.

Press Release Summary:

Featuring diode-pumped and solid-state unidirectional ring-resonator design, Verdi IR 25 laser delivers 25 W of single-mode CW output at 1,064 nm. Its single-longitudinal-mode output has low-noise of less than 0.04% RMS, narrow-linewidth of less than 2.5 MHz FWHM, and coherence length greater than 60 m. With piezo control bandwidth of DC to 20 kHz, device includes piezo-actuated resonator mirror, which enables output frequency to be tuned over range greater than 3.2 GHz.

Original Press Release:

Coherent Releases High Stability Infrared Verdi Laser

Santa Clara, Calif., January 27, 2009 - Coherent Inc. (Santa Clara, CA) (Nasdaq: COHR) has launched an infrared version of the company's award-winning Verdi(TM) 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 (<2 ?rad/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. 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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