School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA.
Opt Lett. 2011 Nov 1;36(21):4233-5. doi: 10.1364/OL.36.004233.
We demonstrate a two-color, fiber-delivered picosecond source for coherent Raman scattering (CRS) imaging. The wavelength-tunable picosecond pump is generated by nonlinear spectral compression of a prechirped femtosecond pulse from a mode-locked titanium:sapphire (Ti:S) laser. The 1064 nm picosecond Stokes pulse is generated by an all-fiber time-lens source that is synchronized to the Ti:S laser. The pump and Stokes beams are combined in an optical fiber coupler, which serves not only as the delivery fiber but also as the nonlinear medium for spectral compression of the femtosecond pulse. CRS imaging of mouse skin is performed to demonstrate the practicality of this source.
我们展示了一种用于相干拉曼散射（CRS）成像的双色光纤脉冲源。可调谐波长的皮秒泵浦通过锁模钛宝石（Ti:S）激光器的预啁啾飞秒脉冲的非线性光谱压缩产生。1064nm 皮秒斯托克斯脉冲由与 Ti:S 激光同步的全光纤时透镜源产生。泵浦和斯托克斯光束在光纤耦合器中组合，该耦合器不仅用作传输光纤，而且还用作飞秒脉冲光谱压缩的非线性介质。对小鼠皮肤进行 CRS 成像，以证明该光源的实用性。
