飞秒泵浦探测光谱仪

ExciPro是一型以飞秒激光器作为泵浦和探测光源的瞬态吸收光谱仪，是研究超快动力学过程的得力工具。该套仪器基于使用简单、测量的设计目的，优化使用各种光机组件，保证了用户在使用过程中可以将仪器的维护工作量降到zui低。

ExciPro内置了一台高精度的光学延迟线，通过软件控制，可以精准地选择源自同一台飞秒激光器的同一光脉冲到达样品，发生“重叠”的时刻，从而可以逐次地通过线阵探测器将不同时刻的光谱采集出来，然后再借助软件的分析功能，将发生在短时间内的瞬态吸收过程，用光谱的形式真实而全面地记录下来，达成探索超快动力学过程的目的。

飞秒泵浦探测光谱仪主要技术特点为：

- Turnkey transient absorption pump-probe femtosecond spectroscopy system
- Multichannel and single-channel detection of photoinduced optical density changes （Delta OD）.
- Detection of transient absorption in solutions, thin films and solid samples
- < 100 fs temporal resolution
- Probe and reference channels
- Computer controlled imaging spectrometer with four-grating turret
- NMOS linear image sensors with high signal-to-noise ratio
- Internal all reflective white light continuum generator
- Internal second harmonic generator for the sample excitation
- Optional CDP 2017 optical parametric amplifier for single-channel probe
- ExciPro 2.5 software for data acquisition, transient spectra analysis and chirp compensation

主要技术参数为：

- Multichannel visible probe spectral range: 350 nm - 1000 nm
- Multichannel infrared probe spectral range: 900 nm - 1600 nm
- Single-channel probe spectral range: 250 nm - 2500 nm
- Maximum delay between probe and excitation pulses: 2.0 ns （4.0 ns in the optional double-pass
configuration）
- Minimum step of the optical delay line: 1.56 fs
- Maximum pulse repetition rate at multichannel detection: 1 kHz