--- type: product schema_version: 1 stock_number: "95227-1" canonical_url: "https://www.artisantg.com/95227-1/ThorLabs-S122" json_url: "https://www.artisantg.com/95227-1/ThorLabs-S122.json" generated_at: "2026-11-07T07:30:14.860Z" last_updated: "2026-10-14T13:00:51.160-05:00" --- # ThorLabs S122 Optical Power Meter System _Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._ ## Summary - Manufacturer: ThorLabs - Model: S122 - Condition: Used and in Excellent Condition - Price: $595.00 USD - Availability: In stock, 1 available - Warranty: 1-Year Warranty with 30-Day Return Guarantee - ITAR restricted: No - Shipping weight: 3.5 lb, estimated - Shipping dimensions: 9X9X3 in, estimated ## Categories - Test Equipment > Optical Test > Power Meters (primary) - Test Equipment > Optical Test > Heads ## Details ### S122A Configuration - Spectra Range: 700-1800 nm - Optical Power Range: 10 nW-5 mW - Sensor: Germanium - Resolution: 1 nW - Sensor Size: 5 mm Diameter - Measurement Standard: NIST Traceable - Input Aperture: 0.39" Diameter - Measurement Uncertainty: +/- 5% - Distance to ND Filter: 0.120 Inches - Distance to Detector: 0.235 Inches ### Includes - Thorlabs S122A Germanium Power Meter Optical Head w/Interface Cable (Approximate Cable Length: 3 ft) ## Function This equipment precisely quantifies optical power across a 700-1800 nm spectral range, from 10 nW to 5 mW, using a 5 mm diameter Germanium sensor. It delivers NIST traceable measurements with 1 nW resolution and +/- 5% uncertainty, enabling accurate characterization of near-infrared light sources and optical systems. ## Application Measures optical power within 700-1800 nm range. hardware platform: Compatible with Thorlabs power meter consoles. Connects via cable to console for data readout and control; 0.39" aperture for optical input. Characterizing laser diode output, measuring fiber optic transmission losses, aligning optical systems, and quantifying infrared light sources. ## Accessories The optical power meter system utilizes a Germanium photodiode to measure optical power within a 700-1800 nm spectral range, with a 10 nW to 5 mW power range and 1 nW resolution. The 5 mm diameter sensor provides NIST-traceable measurements with +/- 5% uncertainty, interfacing via a 0.39" diameter input aperture. The system outputs power readings. ## Images - - - - -