• Ideal for Optical Coherence Tomography
• Designed for Swept-Source OCT and OEM Applications
• Center Wavelength: 1325 nm
• 3 dB Tuning Range: 125 nm
• Real-Time 2D Imaging at 16,000 Lines per Second in OCT Applications
• Integrated Mach-Zehnder Interferometer Enables Easy Wavenumber Triggering

Thorlabs' SL1325-P16 OCT-proven, frequency swept, tunable laser is specifically designed for Swept Source Optical Coherence Tomography (SS-OCT) and Optical Frequency Domain Reflectometry (OFDR) applications. The SL1325-P16 is built for easy operation and is ideal for OEM integration. This laser utilizes Thorlabs' patented Cat-Eye external cavity laser design to sweep across a broad wavelength range. Each laser includes an integrated Mach-Zehnder Interferometer, which can be used for easy wavenumber triggering. A BNC connection is located on the rear panel of the laser to access the interferometer's signal.

The SL1325-P16 has a typical center wavelength of 1325 nm, which is able to penetrate multi-layer biological tissues. The laser can scan at a rate of 16 kHz over its tuning range to provide real-time 2D and 3D imaging capabilities when used in an OCT system. The broad wavelength tuning range of this laser is important for SS-OCT because the broader the spectral range, the higher axial resolution.

• Center Wavelength: 1325 nm (typical), 1310 nm/1340 nm (min/max)
• Tuning Range (-3 dB Cutoff Point): 125 nm (typical), 110 nm (min)
• Tuning Range (-10 dB Cutoff Point): 140 nm (typical), 120 nm (min)
• Repetition Rate: 15.9 kHz (typical), 15.7 kHz/16.1 kHz (min/max)
• Average Optical Output Power: 15 mW (typical), 10 mW (min)
• Optical Power Stability: ±0.5 dB
• Optical Isolation: 50 dB
• Linear Polarization: >80:1
• Coherence Length: 6 mm (typical), 5 mm/6 mm (min/max)
• Operating Temperature: 25 °C (typical), 10 °C/40 °C (min/max)
• Laser Classification (per IEC 60825-1): Class 1M
• Physical size (WxDxH): 315 mm x 295 mm x 146 mm