Photodiode Sensors	Standard	Slim	Integrating Sphere	Fiber Coupled
Power Range	50 nW - 500 mW	500 pW - 500 mW	1 µW - 20 W	100 pW - 20 mW
Wavelength Range	200 - 1800 nm	200 - 1800 nm	350 - 1700 nm	350 - 1700 nm
Typical Application	General Measurement	Tight Places	Incoherent or Divergent Beams	Fiber
Fiber Adapters Available	Yes	Yes	Yes	Yes

Features

Fast Response Time and High Resolution
C-Series Connector Design for Quick Sensor Connection
Overtemp-Alert Sensor (Except S130 Series)
Individually Calibrated with NIST- and PTB-Traceable Certificate of Calibration Plus Embedded Calibration Curve and Sensor Settings

Thorlabs' C-Series Photodiode Power Meter Sensors cover a wide power and wavelength range. These sensors are offered in standard, slim, integrating sphere, and compact fiber versions to meet your specific application requirements. They are the best sensor choice when a fast response time or high resolution is required and there is not a need for a flat spectral response.

These photodiode power meter sensors feature enhanced shielding to avoid electromagnetic interference as well as an over-temperature alert sensor to warn against damage and measurement errors due to overheating of the sensor (except the S130C Series Slim Sensors). For all sensors (except the S130C Series), a set of fiber adapters is available to connect them to standard optical fiber patch cords (see below). Other fiber adapter types are available upon request.

The sensors have 8-32 or M4 mounting holes for mounting to 1/2" Posts. Posts and post holders are not included and sold separately.

Compatibility
The Photodiode Sensors presented here are compatible with C-Series power meter consoles including the the PM200, PM100D, PM100A, PM320E, and PM100USB (see the Power Meter Compatibility Chart). The S150C Series Fiber Sensors are integrated into the connector itself and directly plugged into the console.

Calibration
Each sensor head is individually calibrated and is shipped with a NIST and PTB Traceable Calibration Certificate.The calibration and identification data is stored in the connector of the sensor and is downloaded automatically to the connected power meter console.

Thorlabs offers specific recalibration services for all our photodiode power sensors. To ensure accurate measurements, we recommend recalibrating the sensors annually. Please contact our tech support team for recalibration information and pricing. We also offer expedited sensor calibration.

Sensor Upgrade Service
All C-Series Sensors are incompatible with old power meter consoles with non-C-Series connectors. We offer a sensor upgrade service if you want to use your existing sensors with a new power meter console with C-Series connector. Note: upgraded sensors will be incompatible with old power meter consoles with non-C-Series connectors. Please contact our tech support team for details.

Standard Photodiode Sensors: S120C Series

Item #	S120C	S120VC	S121C	S122C
Technical Specs
Detector Type	Silicon Photodiode	Silicon Photodiode (UV Extended)	Silicon Photodiode	Germanium Photodide
Wavelength Range	400 nm - 1100 nm	200 nm - 1100 nm	400 nm - 1100 nm	700 nm - 1800 nm
Optical Power Range	50 nW - 50 mW	50 nW - 50 mW	500 nW - 500 mW	50 nW - 40 mW
Max Average Power Density	20 W/cm²			10 W/cm²
Max Pulse Energy	20 µJ
Linearity	±0.5%
Resolution^a	1 nW	1 nW	10 nW	2 nW
Measurement Uncertainty^b	±3% (451 - 1000 nm) ±5% (Over Rest of Range)	±3% (451 - 1000 nm) ±5% (Over Rest of Range)	±3% (451 - 1000 nm) ±5% (Over Rest of Range)	±5%

General Information
Typical Application	Low Power Lasers
Laser Types	Diode, Diode Arrays, He-Ne, Dye, Ion Lasers (Ar+, Kr+)
Coating / Diffuser	Reflective ND (OD1)^c	Reflective ND (OD1.5)^d	Reflective ND (OD2)^e	Absorptive ND (Schott NG9)
Cooling	Convection
Head Temperature Measurement	NTC Thermistor 4.7 kΩ
Console Compatibility	PM200, PM100D, PM100A, PM320E, and PM100USB
Response Time	<1 µs
Mechanical Specs
Sensor Dimensions	Ø30.5 mm x 12.7 mm
Active Sensor Area	9.7 mm x 9.7 mm
Sensor Aperture	Ø9.5 mm
Distance to ND Filter	0.10" (2.6 mm)
Distance to Detector	0.23" (5.9 mm)
Cable Length	1.5 m
Connector	Sub-D 9-pin male
Weight	0.07 kg
Mounting and Accessories
Post^c	#8-32 and M4 Taps
Cage System Mounting	N/A
Aperture Thread	External SM1 (1.035"-40)
Fiber Adapters (Optional)	FC, SMA, SC, LC, ST
Viewing Target	VIS/IR	UV	VIS/IR	VIS/IR

Measured with PM100D console in low bandwidth setting.
Beam diameter > 1 mm.
For the S120C, these specifications are valid for devices with serial numbers 1203xxx or higher. Older versions had an absorptive ND diffuser (Schott NG3). Additionally, they came with an #8-32 tap and M4 adpater. For additional information, please contact technical support.
For the S120VC, these specifications are valid for devices with serial numbers 1203xxx or higher. Older versions had a reflective ND diffuser (OD1). Additionally, they came with an #8-32 tap and M4 adpater. For additional information, please contact technical support.
For the S121C, these specifications are valid for devices with serial numbers 1203xxx or higher. Older versions had a absorptive ND diffuser (Schott NG9). Additionally, they came with an #8-32 tap and M4 adpater. For additional information, please contact technical support.

Slim Profile Photodiode Sensors: S130C Series

Item #	S130C	S130VC	S132C
Technical Specs
Detector Type	Silicon Photodiode	Silicon Photodiode (UV Extended)	Germanium Photodide
Wavelength Range	400 nm - 1100 nm	200 nm - 1100nm	700 nm - 1800 nm^a
Optical Power Range (with filter)	500 pW - 5 mW (Up to 500 mW)	500 pW - 0.5 mW^b (Up to 50 mW)^b	5 nW - 5 mW (Up to 500 mW)
Max Average Power Density	20 W/cm²		10 W/cm²
Max Pulse Energy	20 µJ
Linearity	±0.5%
Resolution	100 pW^c	100 pW^d	1 nW^e
Measurement Uncertainty^e	±3% (451 - 1000 nm) ±5% (Over Rest of Range)	±3% (451 - 1000 nm) ±5% (Over Rest of Range)	±5%

General Information
Typical Application	Low Power Lasers
Laser Types	Diode, Diode Arrays, He-Ne, Dye, Ion Lasers (Ar+, Kr+)
Coating / Diffuser	Reflective ND (OD2)^f	Reflective ND (OD1.5)^b	Absorptive ND (Schott NG9/KG3)^a
Cooling	Convection
Console Compatibility	PM200, PM100D, PM100A, PM320E, and PM100USB
Response Time	<1 µs
Mechanical Specs
Sensor Dimensions	150 mm x 15 mm x 10 mm; 5 mm Thickness on Sensor Side
Active Sensor Area	9.7 mm x 9.7 mm
Sensor Aperture	Ø9.5 mm
Distance to ND Filter	0.9 mm
Distance to Detector	3.4 mm
Cable Length	1.5 m
Connector	Sub-D 9-pin male
Weight	0.125 kg
Mounting and Accessories
Post	#8-32 and M4 threads
Aperture Thread (Optional)	SM1, Outer Thread with SM1A29 Adapter
Fiber Adapters (Optional)	FC, SC, LC, SMA, ST (SM1A29 Adapter Required)

For the S132C, these specifications are valid for devices with serial numbers 1203xxx or higher. Older versions had a reflective ND diffuser (OD1), which would decrease the wavelength range from 700 nm to 1800 nm to 1200 nm to 1800 nm. For additional information, please contact technical support.
For the S130VC, these specifications are valid for devices with serial numbers 1203xxx or higher. Older versions had an optical power range of 5 nW to 5 mW (50 nW to 50 mW with filter) and a reflective ND diffuser (OD1). For additional information, please contact technical support.
Measured with PM100D console in low bandwidth setting, without filter.
Measured with PM100D console in low bandwidth setting at 1550 nm, without filter.
Beam Diameter > 1 mm.
For the S130C, these specifications are valid for devices with serial numbers 1203xxx or higher. Older versions had an absorptive ND diffuser (Schott NG9). For additional information, please contact technical support.

Integrating Sphere Photodiode Sensors: S140C Series

Item#	S140C	S144C	S142C	S145C	S146C
Technical Specs
Detector Type	Silicon Photodiode	InGaAs Photodiode	Silicon Photodiode	InGaAs Photodiode	InGaAs Photodiode
Wavelength Range	350 nm - 1100 nm	800 nm - 1700 nm	350 nm - 1100 nm	800 nm - 1700 nm	900 nm - 1650 nm
Optical Power Range	1 µW - 500 mW	1 µW - 500 mW	1 µW - 5 W	1 µW - 3 W	10 µW - 20 W
Max Average Power Density	1 kW/cm²		2 kW/cm²	2 kW/cm²	2 kW/cm²
Max Pulse Energy Density	1 J/cm²		7 J/cm²
Linearity	±0.5%
Resolution^a	1 nW	1 nW	1 nW	1 nW	10 nW
Measurement Uncertainty^b	±3% (451 - 1000 nm) ±5% (Over Rest of Range)	±5%	±3% (451 - 1000 nm) ±5% (Over Rest of Range)	±5%

General Information
Typical Application	Low and Mid Power Lasers / Fiber Lasers		Low and Mid Power Lasers / Fiber Lasers
Laser Types	Diode, He-Cd, ArIo, KrIo, Dye, Ti-Sapphiere, LED		Diode, Ti-Sapphire, He-Cd, ArIo, KrIo, Dye, LED
Coating / Diffusor	Zenith® PTFE Integrating Sphere (Ø1")		Zenith® PTFE Integrating Sphere (Ø2")
Cooling	Convection
Head Temperature Measurement	NTC Thermistor 4.7 kΩ
Console Compatibility	PM200, PM100D, PM100A, PM320E, and PM100USB
Response Time	<1 µs		<1 µs
Mechanical Specs
Sensor Dimensions	Ø45 x 30.5 mm		70 x 74 x 70 mm
Active Detector Area	3.6 x 3.6 mm	Ø2 mm	3.6 x 3.6 mm	Ø2 mm	Ø1 mm
Input Aperture	Ø5 mm		Ø12 mm
Cable Length	1.5 m
Connector	Sub-D 9-pin male
Weight	0.2 kg		0.6 kg
Mounting and Accessories
Post	M4 and #8-32 Taps
Aperture Thread	SM1 (1.035"-40) Outer Thread with SM1A20 Adapter
Fiber Adapters (Optional)	FC (Included), SMA, ST, LC, SC

Measured with PM100D console in low bandwidth setting.
Beam Diameter > 1 mm.

Fiber-Coupled Photodiode Sensors: S150C Series

Item #	S150C	S151C	S154C	S155C
Technical Specs
Detector Type	Silicon Photodiode	Silicon Photodiode	InGaAs Photodiode	InGaAs Photodiode
Wavelength Range	350 nm - 1100 nm	400 nm - 1100 nm	800 nm - 1700 nm	800 nm - 1700 nm
Optical Power Range	100 pW - 5 mW (-70 dBm to 7 dBm)	1 nW - 20 mW (-60 dBm to 13 dBm)	100 pW - 3 mW (-70 dBm to 5 dBm)	100 pW - 20 mW (-60 dBm to 13 dBm)
Max Average Power Density	100 mW/cm²	10 W/cm²	100 mW/cm²	10 W/cm²
Max Pulse Energy	20 µJ
Linearity	±0.5%
Resolution^a	10 pW (-80 dBm)	100 pW (-70 dBm)	10 pW (-80 dBm)	100 pW (-70 dBm)
Measurement Uncertainty^b	±3% (451 - 1000 nm) ±5% (Over Rest of Range)	±3% (451 - 1000 nm) ±5% (Over Rest of Range)	±5%

General Information
Typical Application	Low Power Fiber Lasers
Laser Types	Fiber-Coupled Diode, He-Cd, ArIo, KrIo, Dye, Ti-Sapphire
Coating / Diffusor	N/A	Absorptive ND (Schott NG3)	N/A	N/A
Cooling	Convection
Head Temperature Measurement^c	NTC Thermistor 3 kΩ
Console Compatibility	PM200, PM100D, PM100A, PM320E, and PM100USB
Response Time	<1 µs		<1 µs
Mechanical Specs
Sensor Dimensions	36.2 mm x 31 mm x 14.5 mm (w/o Fiber Adapter)
Active Detector Area	3.6 x 3.6 mm	3.6 x 3.6 mm	3.6 x 3.6 mm
Sensor Aperture	Ø5 mm		Ø5 mm
Distance to ND Filter	N/A	0.5 mm	N/A	0.5 mm
Distance to Detector	2.5 mm	2.9 mm	1.5 mm	3.2 mm
Connector	Sub-D 9-pin male
Weight	0.03 kg
Mounting and Accessories
Aperture Thread	External SM05 (0.535"-40)
Fiber Adapters	Included: FC & SMA; Optional: LC, SC, ST		Included: FC; Optional: LC, SC, ST, SMA

Measured with PM100D console in low bandwidth setting.
Beam diameter > 1 mm.
This specification is valid for devices with serial numbers 1203xxx and higher. For older versions, please contact technical support.

Sensor Connectors

D-type Male

DB9 Male

Pin	Connection
Pin	S120, S140, and S150 Series Sensors	S130 Series Sensors
1	Not Used
2	EEPROM Data
3	Photodiode Anode and NTC Ground	Photodiode Anode
4	Photodiode Cathode
5	Not Used
6	EEPROM Ground
7	NTC	Slider Detection
8	Not Used
9	Not Used

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Posted Comments:

Poster: clarafly

Posted Date: 2013-05-13 03:20:15.297

Can you sell the external SM1 threading adapter of the S14XC series separately? We want to use it with our old S144A.

Poster: jlow

Posted Date: 2013-05-14 09:20:00.0

Response from Jeremy at Thorlabs: We can definitely do this. We will contact you directly for the quote.

Poster: jvigroux

Posted Date: 2013-02-26 04:09:00.0

A response from Julien at Thorlabs: thank you for your inquiry. The sample rate of the S150C when connected to one of our readout consoles is limited by the readout unit. There are different bandwidth and rate to be considered but the main ones are: 1. amplifier bandwidth-100kHz, 2. Clock frequency of the processor - 3kHz, 3. refresh rate of the display - 20Hz. the rise time of the diode itself that is built in the S150C is in the ns range. The interplay between all those time scales can be quite complex so that in order to estimate the usability of such a sensor for measurement of pulsed or modulated light, one needs to know the exact parameters of the light source. I will contact you to discuss furtehr your application.

Poster: tschalk

Posted Date: 2013-01-02 08:00:00.0

This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. To avoid saturation of the photo diode the specified max. power range must not be exceed. I will contact you directly for more detailed information. Best Regards, Thomas

Poster: sharon.goldstein

Posted Date: 2012-12-31 03:57:08.8

Hi, I have the S142C integration sphere. Max power according to the spec is 5W CW. I'm modulating the input power - square wave 50% duty cylce, can I put the maximum power on 10W (--> average is kept on 5W). BTW, wavelength is 915nm? Thanks, Sharon

Poster: tschalk

Posted Date: 2012-10-25 08:12:00.0

A response from Thomas at Thorlabs: Thank you for your inquiry. There is a damage threshold which is 20W/cm². You can find a lot more information in the spec sheet which you can find here: http://www.thorlabs.com/Thorcat/18300/S121C-SpecSheet.pdf

Poster: tds

Posted Date: 2012-10-24 21:27:44.193

I am using the power meter with the S121C in an automated way where a well focused laser might occassionally cross the sensor. Is there a laser damage threshold for this sensor?

Poster:

Posted Date: 2012-04-10 12:03:20.0

any solution for FC/APC fiber??

Poster: jvigroux

Posted Date: 2012-04-10 11:13:00.0

A response from Julien at Thorlabs: thank you for your inquiry. Due to the large active areas of the photodiodes that are used in those sensors and the relatively small distance between fiber adapter output plane and sensor's surface, the FC adapter will work both for FC/PC and FC/APC. There is no risk that the deviation of the output beam from an angled cleave will bring the beam outside of the active area of the sensor

Poster: klee

Posted Date: 2009-10-23 15:49:36.0

A response from Ken at Thorlabs to stefan.wackerow: Unfortunately, the S130VC is not compatible with the old PM100. We can upgrade the older sensor heads to be compatible with the new PM100D power meter. Price for upgrade depends on which sensor head. Please let us know which sensor head you have so that we can send you a quote for the upgrade.

Poster: stefan.wackerow

Posted Date: 2009-10-23 06:41:46.0

We have 2 power meters of the old PM100 type in use. We are interested in a S130VC. Is this new detector compatible to the old power meter? What about the sensor upgrade service, would it make the old sensors incompatible with the old power meters? What is the price?

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