High Sensitivity Thermal Sensors
Description:
The 3A-P-THz is a very sensitive thermal power/energy laser measurement sensor with calibration for terahertz wavelengths. It has a 12mm aperture. It can measure from 15µW to 3W and from 20µJ to 2J. It is calibrated for the spectral range 0.1THz - 30THz. The sensor comes with a 1.5 meter cable for connecting to a meter or PC interface.
8µW to 3W
Features
• Very low noise and drift to measure very low powers and energies
• Broadband and P absorbers for CW and short pulses
• Up to 3W
• Version for Terahertz
Model
3A-P-THz
3A-FS
3A-P-FS-12
Use
Calibrated for Terahertz
radiation
With removable window
For divergent beams, window blocks
infrared
Absorber Type
P type
Broadband + F.S. window
P type + F.S. window
Spectral Range µm
0.1THz - 30THz (c)
0.19 - 20 (b)
0.22 - 2.1
Aperture mm
Ø12mm
Ø9.5mm
Ø12mm
Maximum Beam Divergence
NA
NA
±40 degrees
Power Mode
Power Range (f)
15µW - 3W
8µW - 3W
15µW - 3W
Power Scales
3W to 300µW
3W to 300µW
3W to 300µW
Power Noise Level
4µW (d)
2µW
6µW
Thermal Drift (30min) (a)
5 - 30µW
2 - 10µW
20 - 40µW
Maximum Average Power Density kW/cm2
0.05
1
0.05
Response Time with Meter (0-95%) typ. s
2.5
1.8
2.5
Power Accuracy +/-%
8 (c)
3
3
Linearity with Power +/-%
1
1
1
Energy Mode
Energy Range
20µJ - 2J
15µJ - 2J
20µJ - 2J
Energy Scales
2J to 200µJ
2J to 200µJ
2J to 200µJ
Minimum Energy
20µJ
15µJ
20µJ
Maximum Energy Density J/cm2 (e)
<100ns
1
0.3
1
0.5ms
1
1
1
2ms
1
2
1
10ms
1
4
1
Cooling
convection
convection
convection
Weight kg
0.2
0.2
0.15
Fiber Adapters Available
ST, FC, SMA, SC
ST, FC, SMA, SC
NA
Compliance
CE, China RoHS
CE, China RoHS
CE, China RoHS
Version
Part number
7Z02742
7Z02628
7Z02687
Note: (a) Depending on room airflow and temperature variations
Note: (b) Remove window for measurement beyond 2.2µm
Note: (c) 2 sigma standard lab traceable calibration for 0.6THz – 10THz. For 0.3 - 0.5THz add 4% to error. Outside this region the sensor will measure but is not calibrated.
Note: (d) Back reflections from meter can sometimes cause interference effects with source. Unit should be tilted ~10o in this case
Note: (e) For P type and shorter wavelengths derate maximum energy density as follows:
Wavelength Derate to value
1064nm Not derated
532nm Not derated
355nm 40% of stated value
266nm 5% of stated value
193nm 10% of stated value
Note: (f) Lowest measurable powers are achieved by thermally quiet room conditions, using removable snout, averaging and offset subtraction
商品属性 [波长范围] 0.22 - 2.1um [功率范围] 15µW - 3W