Series 3500 UV Laser
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2525 Walsh Ave. Santa Clara, CA 95051 United States Sales@DPSS-Lasers.com www.DPSS-Lasers.com High Repetition Rate, Efficient, Quasi-CW FE ATU RE S · Up to 3W Power at 355 nm · Rugged, Low Maintenance Design · Excellent Beam Quality M² < 1.2 · Q-Switched Repetition Rate · Stability Better Than 5% Over 8 Hours · Single Shot to > 100 kHz (Quasi-CW) · Low Cost of Ownership The Series 3500 DPSS laser (US Patent #6,002,695) is the most efficient, high power, quasi-CW DPSS UV laser commercially available. Using only a single 2OW diode bar, the Series 3500 has demonstrated powers in excess of 3.0 Watts at 355 nm. This high efficiency conversion means that the laser can be operated at the normal specification, with minimum stress to the optical components and with a reduced diode current to extend the operating life. Minimizing the diode power required to generate the 355nm third harmonic output from the laser also minimizes the thermal effects in the gain medium (Nd: YV04), which results in the lowest possible distortion to the beam. Both the second and third harmonics are generated intra-cavity, thus reducing the need for tight focusing into the non-linear crystals. The result is a stable, highpower UV laser with an M² specification of < 1.2, a near perfect TEMoo mode. Temporal Profile of UV output pulse at 30 kHz and 100 kHz APPLICATIONS • ITO Removal • Spectroscopy • Laser Marking • Micromachining • Wafer Inspection • Stereolithography • Direct Write/ Repair Model 3500 Optimal Schematic • Molecular Uncaging

SPECIFICATIONS Model Pulse Length Repetition Rate Pulse Energy Other models can be specified from 50 mW to 3 W, with any customer defined rep. rate from 1 kHz to 150 kHz. COMMON SPECIFICATIONS PERFORMANCE SYSTEM REQUIREMENTS Wavelength Mode (M²) Specification Beam Diameter (1/e²) at exit Pulse to Pulse Stability Power Stability (8 hr. drift at const. temp.) Beam pointing stability (at const. temp.) Polarization (Linear, Vertical) Beam Divergence (full angle) 354.7 nm TEMoo (M² <1.2) 1.5 mm (collimated) < 10% < 5% < 50 µrad > 100:1 < 0.6 mrad ELECTRICAL Input Voltage Power Consumption (max.)...