THORLABS DET50B User Manual Download Page 18

Ge Biased Detector

 

 

Page 17

 

Rev G, July 12, 2012

 

Chapter 9  Regulatory 

As required by the WEEE (Waste Electrical and Electronic Equipment Directive) 
of the European Community and the corresponding national laws, Thorlabs offers 
all end users in the EC the possibility to return “end of life” units without incurring 
disposal charges. 

 

This offer is valid for Thorlabs electrical and electronic equipment: 

 

Sold after August 13, 2005  

  Marked correspondingly with the crossed out 

“wheelie bin” logo (see right) 

 

Sold to a company or institute within the EC  

  Currently owned by a company or institute 

within the EC  

  Still complete, not disassembled and not 

contaminated 

As the WEEE directive applies to self contained 
operational electrical and electronic products, this end of 
life take back service does not refer to other Thorlabs products, such as: 

 

Pure OEM products, that means assemblies to be built into a unit by the 
user (e.g. OEM laser driver cards)  

 Components 

 

 

Mechanics and optics  

 

Left over parts of units disassembled by the user (PCB’s, housings etc.).  

If you wish to return a Thorlabs unit for waste recovery, please contact Thorlabs 
or your nearest dealer for further information. 

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. 

9.2. Ecological Background 

It is well known that WEEE pollutes the environment by releasing toxic products 
during decomposition. The aim of the European RoHS directive is to reduce the 
content of toxic substances in electronic products in the future. 

The intent of the WEEE directive is to enforce the recycling of WEEE. A 
controlled recycling of end of life products will thereby avoid negative impacts on 
the environment.  

Wheelie Bin Logo 

Summary of Contents for DET50B

Page 1: ...DET50B Ge Biased Detector User Guide...

Page 2: ...rk Current 6 4 5 Junction Capacitance 7 4 6 Bandwidth and Response 7 4 7 Terminating Resistance 8 4 8 Shunt Resistance 8 4 9 Series Resistance 8 4 10 Battery Check 8 4 11 Battery Replacement 9 Chapter...

Page 3: ...ct Current Alternating Current Both Direct and Alternating Current Earth Ground Terminal Protective Conductor Terminal Frame or chassis Terminal Equipotentiality On Supply Off Supply In Position of a...

Page 4: ...ight signals over 800 to 1800 nm range The unit comes complete with a photodiode and internal 12 V bias battery enclosed in rugged aluminum housing The DET50B includes a removable 1 optical coupler SM...

Page 5: ...best frequency performance and a variable terminator VT1 for output voltage flexibility Note the input impedance of your measurement device since this will act as a terminating resistor A load resisto...

Page 6: ...ased upon the incident light 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 operat...

Page 7: ...ero biased The flow of current out of the device is restricted and a voltage builds up This mode of operation exploits the photovoltaic effect which is the basis for solar cells The amount of dark cur...

Page 8: ...dwidth and the response of a photodiode It should be noted that larger diode areas encompass a greater junction volume with increased charge capacity In a reverse bias application the depletion width...

Page 9: ...example and InGaAs detector has a shunt resistance on the order of 10 M while a Ge detector is in the k range This can significantly impact the noise current on the photodiode For most applications h...

Page 10: ...ach DET with an A23 12 V battery installed 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...

Page 11: ...ed upon the incident light and wavelength and can be viewed on the oscilloscope by attaching a load resistance on the output The function of the RC Filter is to filter any high frequency noise from th...

Page 12: ...diode since point A is held at the same potential as point B by the operational amplifier This eliminates the possibility of dark current Photoconductive mode The photodiode is reversed biased thus im...

Page 13: ...e a 10 M input impedance Point the detector toward a fluorescent light and verify that a 60 Hz 50 Hz outside the US signal appears on the scope If so the device should be operating properly and the pr...

Page 14: ...D 40 A Output Voltage VOUT 0 to 5 V General On Off Switch Slide Battery Check Switch Momentary Pushbutton Output BNC DC Coupled Package Size 2 8 x 1 9 x 0 83 70 mm x 48 mm x 21 mm PD Surface Depth 0 1...

Page 15: ...Chapter 7 Specifications 13124 S01 Page 14 7 1 Response Curve...

Page 16: ...5 Thread M4 x 6 35mm for EC 26 2 mm 1 03 in 19 1 mm 0 75 in 16 2 mm 0 64 in 48 0 mm 1 89 in 53 3 mm 2 10 in 70 1 mm 2 76 in 43 2 mm 1 70 in Battery Position Indicator Power Switch A Battery Cap Output...

Page 17: ...Chapter 8 Certificate of Conformance 13124 S01 Page 16 Chapter 8 Certificate of Conformance...

Page 18: ...such as Pure OEM products that means assemblies to be built into a unit by the user e g OEM laser driver cards Components Mechanics and optics Left over parts of units disassembled by the user PCB s...

Page 19: ...654444 www thorlabs com Email sales uk thorlabs com Support techsupport uk thorlabs com France Thorlabs SAS 109 rue des C tes 78600 Maisons Laffitte France Tel 33 0 970 444 844 Fax 33 0 825 744 800 w...

Page 20: ...www w thorlabs c com...

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