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Features
- Compact, handheld, power and energy meter console
- Large 4" lcd screen
- Long-life internal li-polymer battery
- Pre-installed 8 GB SD memory card for data storage
- Console is calibrated and includes certificate of calibration
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Specification
PM100D | |
Display | |
Display Type | Graphical LCD 320 x 240 pixels, LED Backlight |
Display Screens | Numerical, Bar Graph, Line Graph, Statistics, Simulated Analog Needle |
Viewing Area | 81.4 mm x 61.0 mm (3.20" x 2.40") |
Refresh Rate | 20 Hz |
Audio | 1x Speaker |
Sensor Interface | |
Compatible Sensors | All Photodiodes, Thermopiles, and Pyrosa See Below for Sensor Specs |
Time Constant Correction | <1 s |
AD Converter | 16 bit |
Trigger (Pulse Measurements, Pyroelectric Sensors) | Adjustable, 0.1 - 100% |
Connector | DB9F, Left Side |
Sensor Temperature Control | Thermistor |
Temperature Range | -10 to 80 °C |
Analog Outputs | |
Signal | Amplified Input Signal (Not Corrected) |
Voltage Range | 0 to 2 V |
Accuracy | ±3% |
Bandwidth | Up to 100 kHz, Dependent on Sensor and Settings |
Connector | SMA, Left Side |
Digital Outputs | |
Memory | 8 GB Removable SD Card |
Connector / Interface | Mini USB / USB 2.0 |
Power | |
Battery | Li-Polymer, 3.7 V, 1300 mAh |
Charger / DC Input | 5 V / 1 A |
Dimensions and mounting | |
Dimensions (L x W x H) | 180 mm x 105 mm x 38 mm (7.09" x 4.13" x 1.50") |
Weight | <0.5 kg (<1.1 lb) |
Mounting Options | Kickstand; 1/4"-20 Post Thread |
Operating Temperature | 0 to 40 °C |
Storage Temperature | -40 to 70 °C |
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Sensor Selection
Model | S120C | S120VC | S130VC | S132C | S155C | |
Type | Standard Sensor | Standard Sensor | Slim Sensor | Slim Sensor | Fiber Sensor | |
Detector | Si | Si (UV Extended) |
Si Slim |
Ge | InGaAs Fiber |
|
Aperture (mm) | Ø 9.5 | Ø 9.5 | Ø 9.5 | Ø 9.5 | Ø5 | |
Wavelength (nm) | 400-1100 | 200-1100 | 200-450 | 450-1100 | 700 - 1800 | 800 -1700 |
Power (W) |
50 nW - 50 mW | 50 nW - 50 mW (200 - 450 nm) 50 nW - 20 mW (450 - 1100 nm) |
500 pW - 0.5 mW (Up to 50 mW) |
500 pW - 0.2 mW (Up to 20 mW) | 5 nW – 5 mW (Up to 500 mW) |
1 nW - 20 mW |
Item # | S170C | S175C | NS170C |
Detector Type | Silicon Photodiode | Thermal Absorber | Second-Order Nonlinear Crystal with Silicon Photodiode |
Wavelength Range | 350 - 1100 nm | 300 nm - 10.6 µm | Laser: 780 - 1300 nm SHG: 390 - 650 nm |
Optical Power Working Range | 10 nW - 150 mW | 100 µW - 2 W | Laser: 0.5 - 350 mWa SHG: 10 nW - 5 mW |
Max Average Power Density | 20 W/cm2 | 200 W/cm2 | - |
Max Pulse Energy Density | - | 0.1 J/cm² (1 µs Pulse) 1 J/cm² (1 ms Pulse) |
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Max Peak Power Densityb | - | - | 10 TW/cm2 |
Linearity | |||
Resolution | 1 nWd | 10 µWf | 1 nWc,d |
Measurement Uncertainty | ±3% (440 - 980 nm)g ±5% (350 - 439 nm)g ±7% (981 - 1100 nm)g |
±3% (1064 nm) ±5% (300 nm - 10.6 µm) |
±3% (440 - 650 nm)c,i ±5% (390 - 439 nm)c,i |

The S120C power head is designed for general purpose optical power measurements. The head is optimized for small thickness to fit in tight spaces. The high sensitive photodiode with large active area in combination with a reflective, diffused ND filter enables power measurements up to 50 mW in free-space and fiber-based applications. A removeable annular VIS/IR viewing target allows conveniently centering the measured beam to the active area of the photo-diode. The target absorbs light from 400 to 640nm and 800 to 1700nm.
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Specification
Detector Type | Silicon Photodiode |
Wavelength Range | 400 - 1100 nm |
Optical Power Working Range | 50 nW – 50 mW |
Max Average Power Density | 20 W/cm² |
Max Pulse Energy | 20 μJ |
Linearity | ± 0.5% |
Resolution 1) | 1nW |
Measurement Uncertainty 2) |
±3% 440 – 980 nm, ±5% 400 – 439 nm, ±7% 981 – 1100 nm |
Typical Application | Low Power Lasers |
Laser Types | Diode, Diode Arrays, He-Ne, Dye, Ion Lasers (Ar+, Kr+) |
Coating /Diffuser 3) | Reflective ND (OD1.5) |
Cooling | Convection |
Head Temperature Measurement | NTC Thermistor 4.7kΩ |
Console Compatibility | PM100D (亦可搭配 PM100A, PM100USB, PM200, PM320E) |
Response Time | < 1 μs |
Sensor Dimensions | Ø30.5 mm x 12.7 mm |
Active Detector Area | 9.7 mm x 9.7 mm |
Input Aperture | Ø9.5 mm |
Cable Length | 1.5 m |
Connector | Sub-D 9p male |
Weight | 0.07 kg |
Post 3) | #8-32 & M4 thread |
Aperture Thread | SM1, outer thread |
Fiber Adapters (optional) | FC, SC, LC, SMA, ST |
1) Measured with PM100D console in bandwidth low setting. 2) Beam diameter > 1mm 3) This specification is valid for S120C devices from serial number 1203xxx. For older versions, please contact technical support. |
meter consoles (PM100, PM30, PM300, PM300E, S100).
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Responsivity


The S120VC power head is designed for general purpose optical power measurements. The head is optimized for small thickness to fit in tight spaces. The high sensitive photodiode with large active area in combination with a reflective, diffused ND filter enables power measurements up to 50 mW in free-space and fiber-based applications. A removeable annular UV/VIS viewing target allows conveniently centering the measured beam to the active area of the photo-diode. The target absorbs light from 200 to 525 nm.
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Specification
Detector Type | Silicon Photodiode (UV extended) |
Wavelength Range | 200 - 1100 nm |
Optical Power Working Range | 50 nW – 50 mW |
Max Average Power Density | 20 W/cm² |
Max Pulse Energy | 20 μJ |
Linearity | ± 0.5% |
Resolution 1) | 1nW |
Measurement Uncertainty 2) |
±3% 440 – 980 nm, ±5% 280 – 439 nm, ±7% 200 - 279 nm, 981 – 1100 nm |
Typical Application | Low Power Lasers |
Laser Types | Diode, Diode Arrays, He-Ne, Dye, Ion Lasers (Ar+, Kr+) |
Coating /Diffuser 3) | Reflective ND (OD1.5) |
Cooling | Convection |
Head Temperature Measurement | NTC Thermistor 4.7kΩ |
Console Compatibility | PM100D (亦可搭配 PM100A, PM100USB, PM200, PM320E) |
Response Time | < 1 μs |
Sensor Dimensions | Ø30.5 mm x 12.7 mm |
Active Detector Area | 9.7 mm x 9.7 mm |
Input Aperture | Ø9.5 mm |
Cable Length | 1.5 m |
Connector | Sub-D 9p male |
Weight | 0.07 kg |
Post 3) | #8-32 & M4 thread |
Aperture Thread | SM1, outer thread |
Fiber Adapters (optional) | FC, SC, LC, SMA, ST |
1) Measured with PM100D console in bandwidth low setting. 2) Beam diameter > 1mm 3) This specification is valid for S120VC devices from serial number 1203xxx. For older versions, please contact technical support. |
meter consoles (PM100, PM30, PM300, PM300E, S100).
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Responsivity


The S130VC with its slim design of only 5mm at the detector side is perfect to fit into tight optical setups. The ruggedized aluminum head with its large active area silicon photodiode can be held by hand or can be mounted with its 8-32 and M4 threaded mounting holes to posts and post holders.
A slideable ND filter enlarges the power range by approximately factor 100; the position of the filter is automatically recognized by the connected console after a few seconds for calculating the power level with the right responsivity value.
The S130VC is compatible with all new Thorlabs display units. A non-volatile memory in the sensor connector contains sensor information data and the NIST and PTB traceable calibration data.
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Specification
Detector Type | Silicon Photodiode (UV extended) |
Wavelength Range | 200 - 1100 nm |
Optical Power Working Range 3) | 500 pW – 0.5 mW (50 mW with filter) |
Max Average Power Density | 20 W/cm² |
Max Pulse Energy | 20 μJ |
Linearity | ± 0.5% |
Resolution 1) | 100 pW |
Measurement Uncertainty 2) |
±3% 451 – 1000 nm ±5% 200 – 450 nm, 1001 – 1100 nm |
Typical Application | Low Power Lasers |
Laser Types | Diode, Diode Arrays, He-Ne, Dye, Ion Lasers (Ar+, Kr+) |
Coating /Diffuser 3) | Reflective ND (OD1.5) |
Cooling | Convection |
Console Compatibility | PM100D (亦可搭配 PM100A, PM100USB, PM200, PM320E) |
Response Time | < 1 μs |
Sensor Dimensions |
150 mm x 19 mm x 10 mm 5 mm thickness on sensor side |
Active Detector Area | 9.7 mm x 9.7 mm |
Input Aperture | Ø9.5 mm |
Cable Length | 1.5 m |
Connector | Sub-D 9p male |
Weight | 0.125 kg |
Post | #8-32 & M4 threads |
Aperture Thread (optional) | SM1, outer thread with SM1A29 adapter |
Fiber Adapters (optional) | FC, SC, LC, SMA, ST (SM1A29 adapter required) |
1) Measured with PM100D console in bandwidth low setting, without filter. 2) Beam diameter > 1mm 3) This specification is valid for S130VC devices from serial number 1203xxx. For older versions, please contact technical support. |
Please note that the S130VC power meter head is not compatible with the older Thorlabs power
meter consoles (PM100, PM30, PM300, PM300E, S100).-
Responsivity


The S132C with its slim design of only 5 mm at the detector side is perfect to fit into tight optical setups. The ruggedized aluminum head with its large active area silicon photodiode can be held by hand or can be mounted with its 8-32 and M4 threaded mounting holes to posts and post holders. A slideable ND filter enlarges the power range by approximately a factor of 100; the position of the filter is automatically recognized by the connected console after a few seconds for calculating the power level with the right responsivity value. For sensor readout, the S120VC is compatible with any Thorlabs consoles and interfaces equipped with a DB9 connection, and rated for photodiode power measurement. A non-volatile memory in the sensor connector contains sensor information data and the NIST and PTB traceable calibration data.
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Specification
Detector Type | Germanium Photodiode |
Wavelength Range | 700 - 1800 nm |
Optical Power Working Range | 5 nW – 5 mW (500 mW with Filter) |
Max Average Power Density | 10 W/cm² |
Max Pulse Energy | 20 μJ |
Linearity | ±0.5% |
Resolution 1) | 1 nW |
Measurement Uncertainty 2) | ±5% |
Typical Application | Low Power Lasers |
Laser Types | Diode, Diode Arrays, He-Ne, Dye, Ion Lasers (Ar+, Kr+) |
Coating /Diffuser 3) | Absorptive ND (Schott NG9/KG3) |
Cooling | Convection |
Response Time | < 1 μs |
Sensor Dimensions | 150 mm x 19 mm x 10 mm 5 mm Thickness on Sensor Side |
Active Detector Area | 9.7 mm x 9.7 mm |
Input Aperture | Ø9.5 mm |
Cable Length | 1.5 m |
Connector | Sub-D 9p Male |
Weight | 0.125 kg |
Post | #8-32 & M4 Threads |
Aperture Thread(optional) | SM1, Outer Thread with SM1A29 Adapter |
Fiber Adapters (optional) | FC, SC, LC, SMA, ST (SM1A29 Adapter Required) |
1) Measured with PM100D console in bandwidth low setting @ 1550nm, without filter. 2) Beam diameter > 1mm 3) This specification is valid for S132C devices from serial number 1203xxx. For older versions, please contact technical support. |
Please note that the S132C power meter head is not compatible with the older Thorlabs power meter consoles (PM100, PM30, PM300, PM300E, S100).
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Responsivity
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S155C(矽光子量測用感測器)

The S155C power head is designed for fiber based applications in the VIS and NIR wavelength range without having a disturbing cable between sensor head and power meter console. The head is spectrally calibrated over the whole wavelength operating range and detects light from nanowatts up to 20 mW.
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Specification
Detector Type | InGaAs Photodiode |
Wavelength Range | 800 - 1700 nm |
Optical Power Working Range | 1 nW – 20 mW (-60 dBm … +13 dBm) |
Max Average Power Density | 10 W/cm2 |
Max Pulse Energy | 20 μJ |
Linearity | ± 0.5% |
Resolution 1) | 100 pW (-70 dBm) |
Measurement Uncertainty 2) | ±5% |
Typical Application | Low Power Fiber Lasers |
Laser Types | Fiber coupled Diode, He-Cd, ArIo, KrIo, Dye, Ti-Sapphire |
Coating /Diffuser | N/A |
Cooling | Convection |
Head Temperature Measurement 3) | NTC Thermistor 3 kΩ |
Console Compatibility | PM100D (亦可搭配 PM100A, PM100USB, PM200, PM320E) |
Response Time | < 1 μs |
Sensor Dimensions | 36.2 x 31 x 14.5 mm (w/o fiber adapter) |
Active Detector Area | Ø 2 mm |
Input Aperture | Ø 5 mm |
Connector | Sub-D 9p male |
Weight | 0.03 kg |
Aperture Thread | SM05, outer thread |
Fiber Adapters (optional) | SC, LC, ST, SMA (FC included) |
1) Measured with PM100D console in bandwidth low setting. 2) Beam diameter > 1mm 3) This specification is valid for S155C devices from serial number 1203xxx. For older versions, please contact technical support. |
meter consoles (PM100, PM30, PM300, PM300E, S100).
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Responsivity


The S170C Microscope Power Sensor Head is designed to measure the illumination power in microscopes. The housing shares dimensions with a microscope slide and fits standard microscope objective stages in both upright and inverted setups. The sensor can handle a wide power range from less than 10 nW to 150 mW in the specified wavelength range.
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Specification
Detector Type | Silicon Photodiode |
Wavelength Range | 350 - 1100 nm |
Optical Power Working Range | 10 nW – 150 mW |
Max Average Power Density | 20 W/cm² |
Linearity | ±0.5% |
Resolution 1) | 1 nW |
Measurement Uncertainty 2) | ±3% 440 – 980 nm ±5% 400 – 439 nm ±7% 981 – 1100 nm |
Coating /Diffuser | Reflective ND OD 1.5 |
Cooling | Convection |
Response Time | <1 μs |
Sensor Dimensions | 76 mm x 25.2 mm x 5 mm |
Active Detector Area | 18 mm x 18 mm |
Input Aperture | 20 mm x 20 mm |
Cable Length | 1.5 m |
Connector | Sub-D 9-Pin Male |
Weight | 0.07 kg |
Post Mounting | Combi Thread #8-32 & M4 |
Console Compatibility | PM100D, PM100A, PM100USB, PM400, PM101x, PM103x, PM5020 |
1) Measured with PM100D console in low bandwidth setting. 2) Beam Diameter >1 mm, Valid for (24 ± 2) °C |
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Responsivity



The S175C Microscope Power Sensor Head is designed to measure the illumination power in microscopes. The housing shares dimensions with a microscope slide and fits standard microscope objective stages in both upright and inverted setups. The thermal sensor can handle a wide power range from less than 100 μW to 2 W in the specified wavelength range.
The power head features a large, high sensitivity thermal detector with a broadband absorber coating. The detector is protected by an easily cleanable even glass window with a refraction index of n = 1.52 that allows the usage of focusing liquids.
To align and focus the beam in inverted setups, an alignment mark is laser engraved to the bottom of the sensor housing.
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Specification
Detector Type | Thermal Volume Absorber |
Wavelength Operating Range | 300 nm – 10.6 μm |
Optical Power Working Range | 100 μW – 2 W |
Max Average Power Density | 200 W/cm² 200 W/cm² |
Max Pulse Energy Density | 0.1 J/cm² (1 μs Pulse), 1 J/cm² (1 ms Pulse) |
Linearity | ±0.5% |
Resolutiona | 10 μW |
Measurement Uncertaintyb | ±3% @ 1064 nm; ±5% @ 300 nm – 10.6 μm |
Typical Application | Low Power Lasers |
Laser Types | Diode, Diode Arrays, He-Ne, Dye, Ion Lasers (Ar+, Kr+) |
Coating /Diffuser | Broadband |
Cooling | Convection |
Console Compatibility | PM100D, PM100A, PM100USB, PM200, PM320E |
Response Time | <2 s |
Sensor Dimensions | 76 mm x 25.2 mm x 4.8 mm |
Active Detector Area | 18 mm x 18 mm |
Input Aperture | 18 mm x 18 mm |
Cable Length | 1.5 m |
Connector | Sub-D 9p Male |
Weight | 0.05 kg |
Post Mounting | N/A |
a) Measured with the PM200 console.
b) Beam diameter > 1 mm |
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Absorption



The NS170C sensor is designed to measure the relative peak power of two-photon lasers by utilizing a second-order nonlinear β-BBO crystal to convert incident ultrafast NIR pulses into their visible second harmonic. Shortpass filters underneath the β-BBO crystal reject the residual NIR light, allowing only the second harmonic light to transmit down to a large area silicon photodiode sensor. At the entrance of the sensor is a 170 µm thick cover glass sealed to the sensor housing, allowing the sensor to be used with dry, water immersion, and oil immersion objectives. The working distance from the top of the cover glass to the β-BBO crystal is 0.22 mm.
- Specification
Detector Type | Second-Order Nonlinear Crystal with Silicon Photodiode |
Wavelength Range | 780 - 1300 nm |
Optical Power Working Range | Laser: 780 - 1300 nm SHG: 390 - 650 nm |
Max Peak Power Densitya | 10 TW/cm2 |
Laser Average Power Rangeb | 0.5 - 350 mW |
SHG Optical Power Working Range | 10 nW – 5 mW |
Input Aperture | Ø4.5 mm |
Working Distance | 0.22 mm |
Linearityc | ±0.5% |
Resolutionc,d | 1 nW |
Measurement Uncertaintyc,e | ±3% (440 – 650 nm) ±5% (390 – 439 nm) |
Response Time | <1 μs |
Sensor Dimensions | Base: 76.0 mm x 25.2 mm x 5.0 mm (2.99” x 0.99” x 0.20”) Overall: 76.0 mm x 30.0 mm x 11.0 mm (2.99” x 1.18” x 0.43”) |
Cable Length | 1.5 m |
Connector | Sub-D 9-Pin Male |
Weight | 80 g |
Post Mounting | Combi Thread 8-32 and M4 x 0.7 |
Compatible Consolesf | PM100D, PM100A, PM400, and PM502 |
Compatible Interfacesf | PM101x, PM103x, and PM100USB |
a) The specified damage threshold is for objectives with NA > 0.5. The damage threshold will be lower for NA < 0.5.
b) The working range provided is for lasers with a repetition rate of 80 MHz. Because the peak power and peak power density are dependent on the average power and repetition rate of the laser, the upper limit to the working average power range will be lower for lower repetition rates. Exceeding the maximum average power may result in damage to the sensor’s optical components.
c) This specification is for the measured SHG signal.
d) Measured with a PM100D console in low bandwidth setting.
e) Valid for 1/e2 beam diameters >1 mm at the photodiode sensor. Please note that the photodiode sensor is several millimeters below the BBO crystal and for high NA objectives, the beam diameter is expanded appreciably.
f) The NS170C sensor is compatible with all currently available photodiode power meter consoles and interfaces, as well as the previous-generation PM200 and PM320E consoles; it is not compatible with other previous generation Thorlabs power meter consoles. |
- Responsivity
