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Single-Frequency Lasers

Thorlabs offers a number of tunable, single-frequency lasers (SFL) with very narrow linewidths. These laser diodes are made in-house at Thorlabs' semiconductor manufacturing facility. Several types are available, including Distributed Bragg Reflector (DBR), Distributed Feedback (DFB), Volume-Holographic-Grating Stabilized (VHG), and External Cavity Lasers (ECL). We also offer an Ultra-Low-Noise (ULN) Laser, which is a hybrid design that uses a single angled facet gain chip coupled to an exceptionally long fiber Bragg grating.

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