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Photomultiplier Tubes for Oriel Merlin™ Radiometry System

Photomultiplier Tubes for Oriel Merlin™ Radiometry System
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Photomultiplier Tubes for Oriel Merlin™ Radiometry System - 1

1224 Phone: 1-800-222-6440 • Fax: 1-949-253-1680 S p e c t r o s c o p y I n s t r u m e n t s MONOCHROMATORS AND SPECTROGRAPHS BENCHTOP SPECTROMETERS MINISPECTROMETERS SINGLE CHANNEL DETECTION SYSTEMS AND CCD CAMERAS ACCESSORIES FOR FT-IR SPECTROMETERS SPECTROSCOPY INSTRUMENTS WATTS 10-16 10-12 10-13 10-14 10-15 WAVELENGTH (nm) 200 300 400 500 600 700 800 900 77340 77345 77348 77360 77341 WATTS 10-12 10-13 10-14 10-15 WAVELENGTH (nm) 200 400 600 800 1000 77343 77361 77346 Minimum measurable power levels of photomultiplier tubes, operated by Merlin. PMTs are the most sensitive single channel detector we offer. We describe them in detail on page 1233. Here, we show their performance with a Merlin™ Lock-in. The figures represents the performance levels that are fairly typical of our systems. The responsivity and dark current values of PMTs can vary by as much as a factor of 5 each, under identical bias and temperature conditions. Therefore, there may be a few tubes which will not reach these typical results. We offer room temperature end-on and side-on PMTs to cover the 160 to 1100 nm range. Non-calibrated Detectors We do not usually calibrate PMTs, since the long term stability is not adequate for this purpose. You can calibrate Merlin PMT systems with a standard lamp, or transfer calibration from a silicon detector (see page 1225), provided care is taken in selecting the operating conditions. Chopping Frequency Photomultiplier Tubes for Oriel Merlin™ Radiometry System Use any chopping frequency between the 8 and 1100 Hz limits of the Merlin Lock-in. The PMTs will comfortably follow any signal within these limits, transimpedance amplifier bandwidth allowing. Let the noise levels and the desired speed of data collection guide your chopping frequency and time constant selections. We find that frequencies equal to 1.5 or 1.75 times the line frequency and 0.3 to 3 second time constants work very well for low light levels. Detection Systems We offer two PMT packages for Merlin: an end-on and a side-on system. Each Package Includes: • 77265 End-on or 70680 Side-on PMT Housing • 70710 Transimpedance Amplifier • All necessary interconnecting cables To Complete the System, Please Order the Following, Separately: • Photomultiplier Tube (see page 1233 for full details) • 70705 Power Supply, described on page 1235 (or provide your own source of high voltage bias) • Merlin Control Unit • Optical Chopper • Very low light level detectors • Models to cover 160 to 1100 nm Ordering Information Photomultiplier Tube Systems Packages include PMT Housing, Preamplifier and all necessary cables. Order PMT and 70705 Power Supply separately. Model Description 70143 End-on Photomultiplier Tube System 70107 Side-on Photomultiplier Tube System

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Photomultiplier Tubes for Oriel Merlin™ Radiometry System - 2

S p e c t r o s c o p y I n s t r u m e n t s 1225 Email: sales@newport.com • Web: newport.com MONOCHROMATORS AND SPECTROGRAPHS SINGLE CHANNEL DETECTION SYSTEMS MINISPECTROMETERS BENCHTOP SPECTROMETERS AND CCD CAMERAS FT-IR SPECTROMETERS ACCESSORIES FOR SPECTROSCOPY INSTRUMENTS Photomultiplier Tubes Description Model Wavelength Range Peak Wavelength Cathode Responsivity* Photocathode Size NEP* (W Hz-1/2) Supply Voltage Side-on PMT 77340 185-650 nm 340 nm 48 mA/W 8 x 24 mm 1.4 x 10-16 1000 77341 185-870 nm 330 nm 40 mA/W 8 x 24 mm 2.8 x 10-16 1000 77343 400-1000 nm 730 nm 1.9 mA/W 8 x 24 mm...

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