Si Amplified Photodetectors Chapter 1: Warning Symbol Definitions Chapter 1 Warning Symbol Definitions Below is a list of warning symbols you may encounter in this manual or on your device. Symbol Description Direct Current Alternating Current Both Direct and Alternating Current Earth Ground Terminal Protective Conductor Terminal Frame or Chassis Terminal...
Inputs and outputs must only be connected with shielded connection cables. Only with written consent from Thorlabs may changes to single components be carried out or components not supplied by Thorlabs be used. This product has been tested and found to comply with the limits according to IEC 61326-1 for using connection cables shorter than 3 meters (9.8 feet).
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Si Amplified Photodetectors Chapter 2: Safety ESD CAUTION The components inside this instrument are ESD sensitive. Take all appropriate precautions to discharge personnel and equipment before making any electrical connections to the unit. LASER WARNING When working with radiation sources that may be hazardous, follow manufacturers’...
(115 or 230 VAC). The PDA015A housing includes a removable threaded coupler (SM1T1) and retaining ring (SM1RR) that are compatible with any of Thorlabs’ SM1-threaded (1.035”-40) accessories. The housing also accommodates Thorlabs’...
However, the detector should always be mounted and secured for best operation. Unpack the optical head, install a Thorlabs TR-series ½" diameter post into one of the 8-32 (M4 on the PDA015A/M) tapped holes, located on the bottom and side of the head, and mount into a PH-series post holder.
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Si Amplified Photodetectors Chapter 4: Setup Guide The maximum output of the PDA015A is 10 V for high impedance loads and 5 V for 50 Ω loads. The output signal should be below the maximum output voltage to avoid saturation. If necessary, use external neutral density filters to reduce the input light level.
Chapter 5 Operation 5.1. Theory of Operation Thorlabs’ PDA015A is ideal for measuring both modulated/pulsed and CW light sources. As is shown in Figure 2, the PDA015A includes a reverse-biased PIN photodiode (PD) mated to a fixed gain transimpedance amplifier (TIA) followed by a buffer amplifier, and packaged in a rugged housing.
Si Amplified Photodetectors Chapter 5: Operation 5.3. Transimpedance and Conversion Gain The Transimpedance Gain (TG) of the PDA015A is the total gain of both amplifier stages (in units of V/A). The Conversion Gain (CG) (in units of V/W) is simply the product of the photodiode Responsivity (( λ...
Si Amplified Photodetectors Chapter 6: Troubleshooting Chapter 6 Troubleshooting Problem Suggested Solutions There is no signal response. Verify that the power is switched on and all connections are secure. Verify that the power indicator LED on the power supply and the LED on the PDA are both on. Verify that the optical signal wavelength is within the specified wavelength range.
Si Amplified Photodetectors Chapter 7: Specifications Chapter 7 Specifications Electrical Specifications Detector Si PIN Photodiode Active Area Ø150 μm (0.018 mm Wavelength Range λ 400 to 1000 nm Peak Wavelength λ 740 nm Optical Input Power, Max 350 µW Peak Responsivity ( λ...
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Si Amplified Photodetectors Chapter 7: Specifications General Specifications On/Off Switch Slide BNC (DC Coupled) Output 50 Ω Impedance Package Dimensions 1.89" x 2.76" x 0.83" (without SM1T1) (48.0 mm x 70.2 mm x 21.1 mm) Package Dimensions 1.89" x 2.76" x 1.04" (with SM1T1) (48.0 mm x 70.2 mm x 26.4 mm) PD Surface Depth...
Si Amplified Photodetectors Chapter 7: Specifications 7.1. Responsivity Figure 3. Typical Responsivity of the PDA015A 7.2. Temporal Response Figure 4. Typical Impuse Response of the PDA015A Rev B. May 22, 2017 Page 13...
Si Amplified Photodetectors Chapter 7: Specifications Figure 5. Typical Step response of the PDA015A 7.3. Frequency Response Figure 6. Typical Frequency Response of the PDA015A Page 14 TTN112567-D02...
Si Amplified Photodetectors Chapter 7: Specifications 7.4. Electrical Return Loss Figure 7. Typical Electrical Return Loss of the PDA015A 7.5. Noise Spectrum Figure 8. Typical Noise Spectrum for the PDA015A, Measured with a 50 Ω Load and 900 kHz Resolution Bandwidth Rev B.
Si Amplified Photodetectors Chapter 7: Specifications 7.6. Noise Equivalent Power (NEP) Each point on this curve was calculated by integrating the noise power from DC to the given frequency value and then dividing by the square root of that bandwidth. The NEP gives the amount of input power required to match the output noise level.
Si Amplified Photodetectors Chapter 7: Specifications 7.7. Mechanical Drawing Power Indicator LED Power Supply Connection Output BNC ± 12 VDC, 200 mA 21.1 mm (0.83") 12.7 mm (0.50") Detector Surface 4.4 mm (0.17") SM1 (1.035-40) External Thread 26.4 mm (1.04") 48.0 mm (1.89") 43.2 mm...
9.1. Waste Treatment is Your Own Responsibility If you do not return an “end of life” unit to Thorlabs, you must hand it to a company specialized in waste recovery. Do not dispose of the unit in a litter bin or at a public waste disposal site.
Chapter 10 Thorlabs Worldwide Contacts For technical support or sales inquiries, please visit us at www.thorlabs.com/contact for our most up-to-date contact information. USA, Canada, and South America UK and Ireland Thorlabs, Inc. Thorlabs Ltd. sales@thorlabs.com sales.uk@thorlabs.com techsupport@thorlabs.com techsupport.uk@thorlabs.com Europe Scandinavia...
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