作者
Iestyn Pope, Wolfgang Langbein, Peter Watson, Paola Borri
发表日期
2013/3/25
期刊
Optics Express
卷号
21
期号
6
页码范围
7096-7106
出版商
Optica Publishing Group
简介
We have developed a multimodal multiphoton laser-scanning microscope for cell imaging featuring simultaneous acquisition of differential Coherent Antistokes Raman Scattering (D-CARS), two-photon fluorescence (TPF) and second harmonic generation (SHG) using a single 5 fs Ti:Sa broadband (660–970 nm) laser. The spectral and temporal pulse requirements of these modalities were optimized independently by splitting the laser spectrum into three parts: TPF/SHG excitation (> 900 nm), CARS Pump excitation (< 730 nm), and CARS Stokes excitation (730–900 nm). In particular, by applying an equal linear chirp to pump and Stokes pulses using glass dispersion we achieved a CARS spectral resolution of 10 cm^−1, and acquired CARS images over the 1200–3800 cm^−1 vibrational range selected by the time delay between pump and Stokes. A prism pulse compressor in the TPF/SHG excitation was used to …
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