• Collimated Free Space Output Beam
• Instantaneous Linewidth of 120 kHz (Typical)
• USB 2.0 Interface
• SM1 (1.035"-40) and 30 mm Cage System Compatible
• Suitable for Spectroscopy and Interferometry

Thorlabs' TL1550-B INTUN Tunable Laser is designed for demanding applications such as spectroscopy. This truly continuously tunable laser is optimized for step and measurement applications, offers mode-hop-free operation, and has a convenient USB 2.0 interface.

This INTUN tunable laser has an external cavity design (ECL) to enable a wide mode-hop free tuning range. All lasers in the INTUN family have reduced spontaneous emission to further improve the laser performance. The INTUN has an SM1 (1.035"-40)-compatible thread on the output port and mounting holes for our 30 mm cage system to allow ease of use with our optomechanical equipment. The output is a collimated free-space beam. The INTUN B has the means to lock the wavelength to an external wavelength reference such as a gas cell or a frequency comb. This product is a complete turnkey solution without the need for additional electronic boxes.

• Wavelength: 1550 nm
• Optical Power: >20 mW
• Tuning Range: >110 nm
• Tuning Speed Continuous: 0 - 50 nm/s
• Wavelength Resolution
• Controlled MOde: 12 Bits of Wavelength Range
• Free Step Mode: 1 pm
• Fine Tune Mode: 0.2 pm
• Wavelength Repeatability: 1 pm
• Absolute Wavelength Accuracy: ±50 pm
• Wavelength Stability (1 h/24 hr): ±2 pm/±10 pm
• Power Resolution: 25 µm
• Spectral Linewidth: 150 kHx Max
• Effective LInewidth: 1.5 MHz
• Coherence Control: 1 GHz or 2 GHz
• Side Mode Suppression Ratio (SMSR): 45 dBc min
• Spontaneous Emission Ratio (SSE): 40 dB/nm (45 dB/nm Typical; 70 dB/nm Fiber Coupled)
• Signal To Source Spontaneous Emission Ratio (STSSER): 25 dB (>65 dB Fiber Coupled)
• Relative Intensity Noise (RIN): -140 (dB/Hz)
• Optical Output: Free-Space Collimated Beam
• Laser Classification: 3R
• Operating Temperature Range: 15 to 30 °C
• Operating Humidity: Dew Point < 26 °C; 85% Relative Humidity @ 30 °C
• Storage Temperature/Humidity: -20 to 60 °C; Noncondensing Environment
• Dimensions: 242 mm x 87 mm x 142 mm
• Electrical and Interface Specs
• DC Input: +48 V/20 W
• Analog Modulation Input: 2 V_p-p
• Analog Wavelength Output: 0 - 4 V
• Electrical Connectors
• DC Input Voltage: Rear Panel Socket
• Digital Status: 0 - 5 V
• Interlock DB9
• Communications: USB 2.0
• Analog Inputs; BNC