Advertisement
Quick Links
Advertisement
Subscribe to Our Youtube Channel
Related Manuals for THORLABS DET30B2
Summary of Contents for THORLABS DET30B2
- Page 1 DET30B2 Ge Biased Detector User Guide...
- Page 2 Chapter 7 Specifications ..............12 7.1. Response Curve ............ 13 7.2. Mechanical Drawing .......... 14 Chapter 8 Certificate of Conformance ..........15 Chapter 9 Regulatory ................ 16 Chapter 10 Thorlabs Worldwide Contacts ........17 ...
- Page 3 Ge Biased Detector 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...
- Page 4 Chapter 2: Description Chapter 2 Description The Thorlabs DET30B2 is a biased, Germanium (Ge) detector designed for detection of light signals ranging from 800 to 1800 nm. The unit comes complete with a photodiode and internal 12 V bias battery enclosed in rugged aluminum housing.
- Page 5 See Chapter 4, page 7 to determine resistor values. Thorlabs sells a 50 Ω terminator (T4119) for best frequency performance and a variable terminator (VT2) for output voltage flexibility.
- Page 6 Depicted in Figure 1 is a junction photodiode model with basic discrete components to help visualize the main characteristics and gain a better understanding of the operation of Thorlabs' photodiodes. Figure 1 Photodiode Model 4.2.
- Page 7 Please note that sensitivity values in the table are typical values; Thorlabs offers photodetectors with sensitivity ranges that vary from those shown below. Rev A, December 27, 2017...
- Page 8 Ge Biased Detector Chapter 4: Operation Dark Sensitivity Material Speed Cost Current (nm) Silicon (Si) High 400 – 1000 Germanium (Ge) High 900 – 1600 Gallium Phosphide (GaP) High 150 – 550 Indium Gallium Arsenide High 800 – 1800 (InGaAs) Extended Range: Indium High High...
- Page 9 Ge Biased Detector Chapter 4: Operation 2 0.35 4.7. Terminating Resistance A load resistance is used to convert the generated photocurrent into a voltage ) for viewing on a voltage reading device, e.g., an oscilloscope. Depending on the type of the photodiode, load resistance can affect the response speed.
- Page 10 4.11. Battery Replacement Thorlabs delivers each DET with an A23 12 V battery. This battery is readily available at most retail stores, as well as through Thorlabs. The battery supplied will deliver about 40 hours with a 1 mA load, roughly equivalent to a continuous 1.5 mW light source with responsivity 0.6 A/W...
- Page 11 Ge Biased Detector Chapter 5: Common Operating Circuits Chapter 5 Common Operating Circuits Figure 2 Basic DET Circuit The DET Series Detectors are designed according the circuit depicted above. The detector is reverse biased to produce a linear response with applied input light.
- Page 12 Ge Biased Detector Chapter 5: Common Operating Circuits One can also use a photodetector with an amplifier for the purpose of achieving high gain. The user can choose whether to operate in Photovoltaic of Photoconductive modes. There are a few benefits of choosing this active circuit: ...
- Page 13 Ge Biased Detector 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 the proper terminating resistor is installed if using a Voltage measurement device. Verify that the optical signal wavelength is within the specified wavelength range.
- Page 14 Ge Biased Detector Chapter 7: Specifications Chapter 7 Specifications All measurements are performed and at 25 °C ambient temperature unless stated otherwise. Electrical Specifications Detector Active Area Ø3.0 mm (7.1 mm Wavelength Range λ 800 to 1800 nm Peak Wavelength λ...
- Page 15 Ge Biased Detector Chapter 7: Specifications 7.1. Response Curve DET30B2 Responsivity 1000 1200 1400 1600 1800 Wavelength (nm) Rev A, December 27, 2017 Page 13...
- Page 16 Ge Biased Detector Chapter 7: Specifications 7.2. Mechanical Drawing Visit the web for a more detailed mechanical drawing. Page 14 TTN134169-D02...
- Page 17 Ge Biased Detector Chapter 8: Certificate of Conformance Chapter 8 Certificate of Conformance Rev A, December 27, 2017 Page 15...
- Page 18 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.
- Page 19 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...
- Page 20 www.thorlabs.com...
Need help?
Do you have a question about the DET30B2 and is the answer not in the manual?
Questions and answers