All-Fiber Dissipative Soliton Raman Laser Based on Phosphosilicate Fiber

摘要

We propose and demonstrate an all-fiber, synchronously pumped Raman laser based on phosphosilicate fiber (P-doped fiber) for deep tissue multiphoton imaging. The laser operates in a dissipative soliton regime and produces 2.2-ps chirped pulses (compressible to 317 fs) with energy up to 9.2 nJ, 0.3-W average power, and 1240-nm center wavelength. We have also found a new cross-polarization Raman lasing operation that offers access to an important wavelength near 930 nm for calcium imaging.