Nonlinear polarization rotation is the most common equivalent saturable absorber in fiber lasers. This technique exploits the nonlinear refractive index and birefringence effects in the fiber, allowing different parts of the pulse to accumulate differently in the laser cavity. The phase shifts, thus evolving into different polarization states, and then polarization selection by the analyzer, ...
It’s a 635nm single mode fiber coupled laser system. Fiber core diameter is 3.5μm~9μm. This fiber interface is FC/PC.
808nm High power Pigtailed Laser diode + Multimode optial fiber + Drive circuit Fiber: Fiber Diameter 105μm / Numerical Aperture 0.22 / Fiber Connecter (FC/PC)
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