THORLABS DET50B Скачать руководство пользователя страница 4

Ge Biased Detector

 

 

Page 3

 

Rev G, July 12, 2012

 

Chapter 2  Description 

The Thorlabs DET50B is a biased, Germanium (Ge) detector designed for 
detection of light 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 (SM1T1), 
providing easy mounting of ND filters, spectral filters, fiber adapters (SMA, FC 
and ST style), and other Thorlabs 1" stackable lens mount accessories. 

 

Содержание DET50B

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

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

Страница 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...

Страница 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...

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

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