Oriel Thermopile Detectors for Optical Power Meter

Product catalog summary

Overview: The document provides detailed information on Oriel Thermopile Detectors used for optical power measurement in spectroscopy instruments. These detectors operate by absorbing electromagnetic radiation and measuring the resulting temperature increase.

Specifications: The thermopile detectors are available with three different window materials: CaF2, Sapphire, and KRS-5. Each material has a specific usable spectral range and transmittance, with CaF2 offering the broadest range (0.13-11 µm) and highest transmittance (94%). The detectors are coated with a black absorbing material, and their performance is influenced by the transmission properties of the window materials.

Calibration: The detectors are shipped with a single value responsivity, which is representative of their response across the spectral range.

System Requirements: A complete Thermopile Detection System requires a Thermopile Detector and an Oriel OPM Optical Power Meter. The system offers a broad spectral response from 0.2 to 40 µm and features rugged thin film construction for high reliability and long-term stability.

Ordering Information: The document lists both calibrated and non-calibrated models, specifying detector area, window material, maximum irradiance, typical DC responsivity, responsivity time, and noise equivalent irradiance (NEI). Prices are provided for each model.

Catalog excerpts

Oriel Thermopile Detectors for Optical Power Meter -1

1 MONOCHROMATORS AND SPECTROGRAPHS FT-IR SPECTROMETERS BENCHTOP SPECTROMETERS MINISPECTROMETERS SINGLE CHANNEL DETECTION SYSTEMS Phone: 1-800-714-5393 • Fax: 1-203-378-2457 S p e c t r o s c o p y I n s t r u m e n t s ACCESSORIES FOR SPECTROSCOPY INSTRUMENTS Oriel Thermopile Detectors for Optical Power Meter ABSORPTION (%) WAVELENGTH (ìm) 100 80 60 40 20 0 5 10 15 20 Typical absorption of Thermopile Detector Coating Thermal detectors of electromagnetic radiation operate by absorbing the radiation and measuring the subsequent temperature rise. Their broadband, wavelength-neutral response is only limited by the spectral flatness of their black coating and the transmission characteristics of any window materials used to protect them. The thermopiles listed here work with the Oriel OPMTM (Optical Power Meter). The Choices We offer three different thermopile detectors differing in the window material. We coat the active detector element with a black, absorbing coating. The typical spectral properties of this coating are modified by the transmission properties of the windows used with them, which we list in Table 1. Table 1 Windows for Oriel Thermopile Detectors Material Usable Spectral Range Approximate Transmittance Water Solubility (g/100g) Affected By Humidity CaF2 0.13-11 ìm 94 % 0.0017 no Sapphire 0.13-6 ìm 90 % 0.0 no KRS-5 0.6-40 ìm 74 % 0.05 no Calibration The calibrated detectors are shipped with a single value responsivity, representative of the response throughout the spectral range of the detector. What Else do I Need? For a complete Thermopile Detection System, you simply need: • Thermopile Detector • Oriel OPM Optical Power Meter • Broad spectral response - 0.2 to 40 ìm • Rugged thin film construction for high reliability • Excellent long term stability Ordering Information Type Detector Area Window Maximum Irradiance Typical DC Responsivity Typical Responsivity Time Typical Noise Equivalent Irradiance (NEI) Model Price Non-Calibrated 0.55 x 0.51 mm Sapphire 0.1 W cm-2 200-300 ìA/W 0.05-0.1 s 25 nW cm-2 71967 0.55 x 0.51 mm CaF2 0.1 W cm-2 200-300 ìA/W 0.05-0.1 s 25 nW cm-2 71968 0.55 x 0.51 mm KRS-5 0.1 W cm-2 200-300 ìA/W 0.05-0.1 s 25 nW cm-2 71971 Calibrated 0.55 x 0.51 mm Sapphire 0.1 W cm-2 200-300 ìA/W 0.05-0.1 s 25 nW cm-2 71957 0.55 x 0.51 mm CaF2 0.1 W cm-2 200-300 ìA/W 0.05-0.1 s 25 nW cm-2 71958 0.55 x 0.51 mm KRS-5 0.1 W cm-2 200-300 ìA/W 0.05-0.1 s 25 nW cm-2 71961

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