THORLABS S120VC Standard Photodiode Power Sensor (50 nW – 50 mW (200 – 450 nm), 50 nW – 20 mW (450 – 1100 nm))

Detector Type: Silicon Photodiode (UV extended)

Wavelength Range: 200 – 1100 nm

Optical Power Working Range:

• 50 nW – 50 mW (200 – 450 nm)

• 50 nW – 20 mW (450 – 1100 nm)

Average Power Density (Max): 20 W/cm²

Pulse Energy (Max): 20 µJ

Linearity: ±0.5%

Resolution: 1 nW

Measurement Uncertainty:

• ±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: Reflective ND (OD 1.5)

Cooling: Convection

Head Temperature Measurement: NTC Thermistor, 4.7 kΩ

Response Time: < 1 µs

Sensor Dimensions: Ø30.5 mm × 12.7 mm

Active Detector Area: 9.7 mm × 9.7 mm

Input Aperture: Ø9.5 mm

Cable Length: 1.5 m

Connector: Sub-D 9p Male

Weight: 0.07 kg

Mounting Thread: 8-32 and M4

Aperture Thread: External SM1

Fiber Adapters (optional): FC, SC, LC, SMA, ST

Datasheet