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U S E R ' S G U I D E
80-MHz Balanced
Photoreceivers
Models 1807 and 1817
These photoreceivers are sensitive to
electrostatic discharges and could be
permanently damaged if subjected to any
discharges. Ground yourself adequately
prior to handling these detectors or making
connections. A ground strap provides the
most effective grounding and minimizes
the likelihood of electrostatic damage.
phone: (877) 835–9620
e-mail: tech@newport.com
www.newport.com
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Summary of Contents for Newport 1807
- Page 1 U S E R ’ S G U I D E 80-MHz Balanced Photoreceivers Models 1807 and 1817 These photoreceivers are sensitive to electrostatic discharges and could be permanently damaged if subjected to any discharges. Ground yourself adequately prior to handling these detectors or making connections.
- Page 2 Warranty Newport Corporation guarantees its products to be free of defects for one year from the date of shipment. This warranty is in lieu of all other guarantees, expressed or implied, and does not cover incidental or consequential loss. Information in this document is subject to change without notice.
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Page 3: Table Of Contents
Contents Introduction Overview..........5 Operation Quick Start . - Page 4 This page was intentionally left blank.
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Page 5: Introduction
Introduction Overview The Newport Model 18X7 balanced photoreceiver consists of two matched photodiodes and a high- speed amplifier that generates an output voltage proportional to I 2 - I 1 , the difference between the photocurrents in the two photodiodes. - Page 6 This page was intentionally left blank.
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Page 7: Operation
Operation Quick Start The following parts are supplied with the Model 18X7 balanced photoreceiver Model 0923 M8B-to-M8B connector power cable • Model 0924 M8B-to-banana plug power cable • Model 1225 SMA-to-BNC adapter • The steps below describe the basics of setting up and using the photoreceiver. - Page 8 For the Newport Model 0901 power supply, use the 0923 M8B-to-M8B cable. For other power supplies, use the 0924 M8B-to-banana plug power cable. When using the M8B-to-banana plug cable, take care to hook up the banana plugs as follows to avoid damaging the photoreceiver: Red = +15 V, Black = -15 V, Green = Ground.
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Page 9: General Principles
50-Ω coaxial cable. General Principles The Newport Model 18X7 balanced photoreceiver consists of two matched photodiodes and a high- frequency amplifier that generates an output voltage proportional to I 2 - I 1 , the difference between the photocurrents in the two photodiodes. - Page 10 Responsivity and Input Power The Model 1807 uses a matched pair of silicon photodiodes, while the Model 1817 uses a matched pair of InGaAs photodiodes. Figure 3 shows the typical responsivity of the photodiodes. Figure 3: Typical responsivities of the...
- Page 11 approximately ±4 V before the amplifier is saturated. For a 50-Ω load, the maximum output voltage will be approximately ±2 V before saturation. The 3-dB bandwidth is typically in excess of 80 MHz for the Model 18X7 photoreceivers. See the typical frequency response plot in Figure 4.
- Page 12 Figure 5: Typical Input Referred Noise (top) and typical Output Noise (bottom) for the 18X7 products...
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Page 13: Customer Service
Customer Service Technical Support Information and advice about the operation of any Newport product is available from our technical support engineers. For quickest response, ask for “Technical Support” and know the model number and serial number of your photoreceiver. Hours: 8:00-5:00 PST, Monday through Friday (excluding... -
Page 14: Specifications
Specifications Model 1807 Model 1817 Wavelength Range 320–1000 nm 900–1700 nm 3-dB Bandwidth DC–80 MHz DC–80 MHz Common Mode 25 dB typical 25 dB typical Rejection Ratio Conversion Gain 2x10 4x10 Typical Max. Responsivity 0.5 A/W @760nm 1.0 A/W @1550nm...
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