SFG Spectrometer
Ideal laser spectroscopy tool for in-situ investigation of surfaces and interfaces. SFG spectrometer operates from 4300 to 625 cm-1 and provides < 6 cm-1 spectral resolution. The heart of the system is a picosecond Nd:YAG laser generating 25 ps pulses that pump an OPG/DFG delivering from 260 to 20 µJ per pulse across the IR range.
| General |
SFG Basic |
SFG Classic |
SFG Advanced |
SFG Double resonance |
| Operation wavelength |
2.3–4 µm (4300–2500 cm-1)
|
2.3–10 µm
(4300–1000 cm-1)1
|
2.3–16 µm (4300–625 cm-1)
|
2.3–10 µm (4300–1000 cm-1)
|
| Spectral resolution, cm-1 |
<6 |
<6 |
<6 |
<6 |
| Data acquisition rate, Hz |
10 |
50 |
20 |
10 |
| VIS Beam | ||||
| Wavelength, nm |
532 |
532 2) |
532+1064 |
(210-340), (370-419), 420-680 |
| Linewidth, cm-1 |
<2 |
<2 |
<6 3) |
<2 |
| Pulse energy, mJ |
~1 |
~ 1 2) |
~ 1 |
0.1-1 |
| Pulse duration, ps |
20-30 |
|||
| Polarization |
Linear, selectable s or p ; purity > 1: 100 |
|||
| IR beam | ||||
| Wavelength, µm |
2.3-4 |
2.3-10 1) |
2.3 - 16 |
2.3 - 10 1) |
| Linewidth, cm-1 |
< 6 |
|||
| Pulse energy, µJ | ||||
| 2.3 µm |
> 200 |
>200 |
>200 |
>200 |
| 4 µm |
> 30 |
>200 |
>260 |
>260 |
| 6 µm |
- |
>200 |
>200 |
>200 |
| 8 µm |
- |
>100 |
>100 |
>100 |
| 10 µm |
- |
>40 |
>40 |
>40 |
| 12 µm |
- |
- |
>75 |
- |
| 14 µm |
- |
- |
>45 |
- |
| 16 µm |
- |
- |
>40 |
- |
| Polarization |
Linear; selectable s or p ; purity 1:100 |
|||
1) Optional down to 16 µm (625 cm-1) upgrade is available
2) Optional upgrade with additional VIS at 1064 nm is available
3) < 10, for spectral range 210-419 nm