Instrument No. LHA19120048 Specification 2090000
Manufacture WITec Model Alpha300R
Made in Germany Classification No. 010410
Location 4#220 Manufacture date 20/11/2019
Purchase Date 5/8/2019 Internet access time 2/1/2010
Main Technical specifications
1. Spectral resolution (normal measurement) : ≤ 0.8cm-1;
2. Low wavenumber: 473nm: 100 cm-1; 532nm: 10 cm-1; 633 nm: 80 cm-1;
3. Spatial resolution of Raman mapping: transverse (XY) : ≤350 nm @ 532 nm; Longitudinal (Z) : ≤ 900 nm@532 nm
4. Confocal sensitivity: SNR of the silicon third-order Raman peak (approx. 1440 cm-1) was better than 25:1;
Main functions and features
The main characteristics of WITec high resolution fast mapping Mircro-Raman spectrometer are: high resolution and fast Raman mapping, single point test time less than 1ms, mapping spatial resolution: transverse (XY) : ≤350 nm @ 532 nm; Longitudinal (Z) : ≤ 900 nm@532 nm, and equipped with the following functional accessories:
1. Laser: three excitation wavelengths: 473nm (25mw); 532nm (75mw) and 633nm (50mw)
2. Zeiss open optical microscope, equipped with a dark field scattering module to measure dark field scattering spectrum;
3. Polarization accessory: Measure rotate polarization of the excitation light path and signal light path
4. Automatic focusing accessory: Fast Raman mapping together with real-time focusing on rough surface
5. Photocurrent mapping accessories (including current source): the spatial resolution of photocurrent mapping is better than 500nm
6. Cold and heat temperature-control system: temperature range: -196° -600 °C, combined with electrical testing function;
