| 主要规格及技术指标 |
"1.光路设计：单光束吸收，用于直接检测超短激光激发后的动力学过程（动力学模式），有垂直激发，共线激发，漫反射式三种光路可选
2.双样品仓设计，一个用于瞬态吸收测试，一个用于激光诱导荧光测试，更好的收集微弱信号
3.测量模块：激光诱导瞬态吸收，激光诱导瞬态荧光
4.灵敏度（最小OD值）：≤0.002 （单次，快检测器选项）；≤0.0005（单次，慢检测器选项）
5.时间分辨率：响应时间（FWHM）≤7 ns（100MHz采集带宽，快检测器选项）
6.探测光源
6.1 类型：≥150W长寿命连续/脉冲氙灯（无臭氧）,高强度，高信噪比
6.2 输出波长范围: 200～870nm
6.3 脉冲模式：10 Hz重复或单次
6.4 脉冲电流：0-100A
7 泵浦光源
7.1 闪光灯泵浦的Nd:YAG调Q激光器
7.2 光学参量振荡器OPO
7.2.1 调谐范围: 192nm-2750nm
7.2.2 OPO波长调节：自动化计算机控制
7.2.3 输出能量: ≥30mJ@Visible peak；≥6mJ@UV peak
7.2.4 355nm泵浦光可单独输出使用，输出能量100mJ@355nm
7.2.5 YAG 激光器倍频和三倍频晶体均采用恒温控制
7.2.6 光谱线宽：3-7cm-1
7.2.7 光束发散角：＜2mrad
8.发射单色器
8.1 类型：Czerny-Turner三光栅塔轮
8.2 焦距：≥300mm
8.3 光圈：f/4.1
8.4 狭缝：<10μm-10mm连续可变（马达驱动）
8.5 杂散光抑制率：≤1:105
8.6 动力学模式
8.6.1 光栅：平面刻线光栅，1800g/mm，闪耀波长：500nm
8.6.2 线性色散：≤1.8nm/mm
8.6.3 最小步进：≤0.05nm
8.6.4 光谱带宽：0.1-18nm
8.7 光谱模式
8.7.1 光栅：平面刻线光栅，150g/mm，闪耀波长：500nm
8.7.2 线性色散：≤21.6nm/m
8.7.3 波长范围：185nm-850nm （有效水平ICCD尺寸：≥25mm)
8.7.4 光谱分辨率：≤0.56nm（光谱覆盖/960有效像素）
8.8 软件控制的自动滤光片轮，用于消除二级衍射峰
9. 检测器
9.1动力学模式
9.1.1类型：五级倍增型光电倍增管，高电流线性范围
9.1.2最小检测器响应宽度：≤5ns
9.1.3光谱响应范围：200-870nm
9.1.4光窗：紫外玻璃
9.1.5检测器阻抗：50Ω（快检测器，<3ns上升时间）1KΩ（慢检测器，<100μs上升时间）
9.1.6两种输出模式，其中一种模式为高速放大器的快检测器模式
9.2 光谱模式
9.2.1 图像增强型CCD
9.2.2 最小光学门控宽度：≤7ns
9.2.3 最小有源像素：960 x 255
9.2.4 有效面积：≥25mm x 6.7mm
9.2.5 冷却：-30℃
10. 数据获取电子部分
10.1 数字存储示波器
10.2 ICCD 操作软件远程控制
11.可实现与稳态瞬态荧光光谱仪耦合联用，共用高能激光器
12.软件功能：一套软件即可完成仪器所有参数设计及不同功能测试：
1. Optical path design: single beam absorption, used for direct detection of ultra-short laser excitation after the dynamic process (dynamic mode), vertical excitation, collinear excitation, diffuse reflection three optical path options
2. Dual sample chamber design, one for transient absorption test, one for laser-induced fluorescence test, better collection of weak signals
3. Measurement module: laser induced transient absorption, laser induced transient fluorescence
4. Sensitivity (minimum OD value) : ≤0.002 (single, fast detector option); ≤0.0005 (single, slow detector option)
5. Time resolution: response time (FWHM) ≤7 ns (100MHz acquisition bandwidth, fast detector option)
6. Detect light sources
Type: ≥150W long life continuous/pulse xenon lamp (no ozone), high intensity, high SIGNal-to-noise ratio
6.2 Output wavelength range: 200 ~ 870nm
6.3 Pulse mode: 10 Hz repeat or single
6.4 Pulse current: 0-100A
7 pump light source
7.1 Flashlamp pumped Nd:YAG Q-switched laser
7.2 Optical parametric Oscillator OPO
7.2.1 Tuning range: 192nm-2750nm
7.2.2 OPO wavelength adjustment: automatic computer control
7.2.3 Output energy: ≥30mJ@Visible peak; 6 or higher mj @ UV peak
7.2.4 355nm pump light can be used separately, and the output energy is 100mJ@355nm
7.2.5 YAG laser frequency-doubling and frequency-tripling crystals are controlled by constant temperature
7.2.6 Spectral linewidth: 3-7cm-1
7.2.7 Beam divergence Angle: < 2MRad
8. Launch monochromator
8.1 Type: Czerny-Turner three grating tower wheel
8.2 Focal length: ≥300mm
8.3 Aperture: F /4.1
8.4 Slit: <10μm-10mm continuous variable (motor driven)
8.5 Stray light suppression rate: ≤1:105
8.6 Dynamic Mode
8.6.1 Grating: Plane line grating, 1800g/mm, shining wavelength: 500nm
8.6.2 Linear dispersion: ≤1.8nm/mm
8.6.3 Minimum step: ≤0.05nm
Spectral bandwidth: 0.1-18nm
8.7 Spectral Mode
8.7.1 Grating: Plane line grating, 150g/mm, shining wavelength: 500nm
8.7.2 Linear dispersion: ≤21.6nm/m
8.7.3 Wavelength range: 185nm-850nm (effective level ICCD size: ≥25mm)
8.7.4 Spectral resolution: ≤0.56nm (spectral coverage /960 effective pixels)
8.8 Software controlled automatic filter wheel for eliminating second-order diffraction peaks
9. The detector
9.1 Dynamic Mode
9.1.1 Type: five-stage multiplier photomultiplier tube, high current linear range
9.1.2 minimum detector response width: ≤5ns
Spectral response range: 200-870nm
9.1.4 Light Window: UV glass
9.1.5 Detector impedance: 50 ω (fast detector, <3ns rise time) 1K ω (slow detector, <100μs rise time)
9.1.6 Two output modes, one of which is the fast detector mode of the high speed amplifier
9.2 Spectral Mode
9.2.1 Image enhanced CCD
9.2.2 minimum optical gating width: ≤7ns
Minimum active pixel: 960 x 255
9.2.4 Effective area: ≥25mm x 6.7mm
9.2.5 Cooling: -30℃
10. Electronic component of data acquisition
10.1 Digital storage oscilloscope
10.2 REMOTE control by ICCD operation software
11. It can be coupled with steady-state transient fluorescence spectrometer and share high-energy laser "
|
