Optical system:
| Optical scheme: |
Original, with dispersion subtraction |
| F\number: |
1/3.6 |
| Focal length (output): |
160 mm |
| Stray light (halogen lamp with 350 nm cut-off filter): |
< 0.01% |
| Stray light (20 nm from laser line): |
10-7 |
Drive
| Motor: |
micro stepper |
| Drive: |
warm |
| Step size: |
3.375 arc seconds |
| Precision: |
± 1 step |
| Max. speed: |
10 000 steps/s |
Gratings
| Type: |
Ruled, concave, with a variable line density |
| Line density: |
1200 l/mm |
| Blaze wavelength: |
280 nm |
| Size: |
40 х 40 х 10 mm |
| Operating wavelengths range (efficiency of grating > 40%): |
190 - 560 nm
|
Optics
Reciprocal linear dispersion for first monochromator
(wavelength 546 nm): |
5.2 nm/mm |
| Reciprocal linear dispersion for double monochromator |
0 nm/mm |
| Spectral resolution (width of entrance and intermediate slits 0.22 mm): |
1.3 nm |
| Repeatability: |
± 0.1 nm |
| Wavelength accuracy: |
± 0.25 nm |
| Average scanning step: |
0.025 nm |
Spectral slits
| Control: |
manually operated |
| Width: |
4 fixed positions |
| Entrance and intermediate: |
0.22; 0.54; 1.1; 1.6 mm |
| Output: |
0.44; 1.08; 2.2; 3.2 mm |
| Height: |
6 mm |
Integrated shutter
| Shut time: |
~100 ms |
| Max. frequency: |
1 Hz |
| Control: |
On-board CPU or TTL-signals from the external device |
Dimensions, power requirements
| Overall sizes (LхWхH): |
419 х 140 х 175 mm |
|
Weight:
|
8 kg |
| Electric requirements: |
100 - 230 V, 50/60 Hz |
| Power consumption: |
20 W |
Control
| Central: |
on-board CPU |
| External: |
PC |
| External interface: |
Ethernet |
DM160 is a fully automated device. The embedded controller exercises a regular control of execution of the control commands of mechanisms of the device that enter from external control unit. Besides, the internal controller operates ADC board that can be used optionally.
Dimensional drawing:
