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© 2015 Thorlabs

5 Appendix

17

5.4   Typical Spectral Noise

The  typical  noise  spectrum  was  measured  using  an  electrical  spectrum  analyzer  (resolution
bandwidth 10 kHz, video bandwidth 10 kHz). The optical input

 

of the detector was blocked. The

black curve  ("Reference") was  measured  with  the  same  setup  and  the  detector  switched  off  ,
i.e., it represents the measurement system’s noise floor.

Typical Spectral Noise APD430A

Typical Spectral Noise APD430A2

Содержание APD430 Series

Страница 1: ...Adjustable Gain Avalanche Photodetectors APD430x Operation Manual 2015 ...

Страница 2: ...Version Date 1 1 09 Sep 2015 Copyright 2015 Thorlabs ...

Страница 3: ...n 10 3 4 Recommendations 4 Maintenance and Service 11 5 Appendix 12 12 5 1 Technical Data 13 5 2 Typical Detector Responsivity Curves 15 5 3 Typical Output Frequency Response 17 5 4 Typical Spectral Noise 19 5 5 Drawings 22 5 6 Fiber Coupling onto Small Detector Area 23 5 7 Certifications and Compliances 24 5 8 Warranty 25 5 9 Copyright and Exclusion of Reliability 26 5 10 Thorlabs End of Life Pol...

Страница 4: ...nternational partners are looking forward to hearing from you Thorlabs GmbH Warning Sections marked by this symbol explain dangers that might result in personal injury or death Always read the associated information carefully before performing the indicated procedure Please read these advices carefully This manual also contains NOTES and HINTS written in this form Attention Paragraphs preceeded by...

Страница 5: ...430x has three tapped mounting holes The APD430x series is powered by the included external power supply 12 V 200 mA via a PICO M8 power connector 1 1 Safety Attention All statements regarding safety of operation and technical data in this instruction manual will only apply when the unit is operated correctly as it was designed for Prior to applying power to the APD430x make sure that the protecti...

Страница 6: ...Adjustable Gain Avalanche Photodetector Silicon APD 400 1000 nm 8 32 mounting holes APD430A M Temperature Compensated Adjustable Gain Avalanche Photodetector Silicon APD 400 1000 nm M4 mounting holes APD430C Temperature Compensated Adjustable Gain Avalanche Photodetector InGaAs APD 900 1700 nm 8 32 mounting holes APD430C M Temperature Compensated Adjustable Gain Avalanche Photodetector InGaAs APD ...

Страница 7: ...to use your own power supply you can ask Thorlabs for an appropriate power connector cable Carefully unpack the unit and accessories If any damage is noticed do not use the unit Call Thorlabs and have us replace the defective unit If necessary mount the unit on your optical table or application The unit has three tapped mounting holes see section Mounting for details Remove the metal cover cap tha...

Страница 8: ...re in general with lower temperatures the M factor will increase with higher temperatures decrease The APD430x series Avalanche Photodetectors are temperature compensated A thermistor senses the temperature inside the APD430x enclosure and a special electronic circuit controls the applied to the APD reverse voltage in accordance with the temperature change As the M multiplication factor depends on...

Страница 9: ...alanche Photodetectors deliver an OUTPUT voltage which is a function of incident light power Popt detector s responsivity  l multiplication factor M and transimpedance gain G given by  l for a given wavelength can be read from the spectral responsivity curves see Technical Data to estimate the OUTPUT voltage The M factor gain settings range is 10 to 100 APD430A and APD430A2 and 4 to 20 for APD43...

Страница 10: ... filters apertures or fiber adapters as well as providing an easy mounting mechanism using the Thorlabs cage assembly accessories The electrical connectors the optical gain adjustment knob and the ON OFF switch are conveniently located on the side walls of the housing for easy access and to minimize the thickness of the Avalanche Photodetector so it can fit into tight spaces For maximum flexibilit...

Страница 11: ...level in critical cases The Gain adjustment can be used for setting the output voltage to an appropriate value Note APDs generate noise due to the multiplication process so excess noise increases as the gain is increased Similarly the photocurrent generated by signal light is also amplified by the gain These facts mean that the best S N exists at a certain gain 1 Turn the power switch to O when yo...

Страница 12: ...distance to the Avalanche Photodetector If possible you can also rotate the Avalanche Photodetector input away from the noise source Different common ground points can also be tested The amplifier offset voltage is factory set to zero at 23 C ambient temperature Due to the very high transimpedance gain even small temperature changes may affect offset voltage Therefore it is recommended to use the ...

Страница 13: ...tant Attention To avoid damage to the instrument do not expose it to spray liquids or solvents The unit does not need a regular maintenance by the user It does not contain any modules and or components that could be repaired by the user himself If a malfunction occurs please contact Thorlabs for return instructions Do not remove covers High voltage 28 ...

Страница 14: ...8 0 µW 800 nm M 100 80 µW 800 nm M 10 8 0 µW 600 nm M 100 80 µW 600 nm M 10 22 µW 1550 nm M 20 110 µW 1550 nm M 4 Maximum Input Power Photodiode Damage Threshold 1 mW 1 mW 1 mW M Factor Adjustment Range 10 to 100 10 to 100 4 to 20 Minimum NEP DC 100 MHz Integrated Noise DC 400 MHz 5 5 nW RMS 6 nW RMS 17 nW RMS Electrical Output Impedance BNC 50 W Maximum Output Voltage 4 1 V High Z load 2 0 V 50 W...

Страница 15: ... 2015 Thorlabs 5 Appendix 13 5 2 Typical Detector Responsivity Curves Typical Detector Responsivity APD430A M 100 Typical Detector Responsivity APD430A2 M 100 ...

Страница 16: ... 2015 Thorlabs 14 APD430x Typical Detector Responsivity APD430C M 20 ...

Страница 17: ...is measurement a test signal generated by an optical transmitter was fiber coupled to the Avalanche Photodetector The OUTPUT frequency response was measured using a optical network analyzer Typical Output Frequency Response APD430A Typical Output Frequency Response APD430A2 ...

Страница 18: ... 2015 Thorlabs 16 APD430x Typical Output Frequency Response APD430C ...

Страница 19: ...ectrum analyzer resolution bandwidth 10 kHz video bandwidth 10 kHz The optical input of the detector was blocked The black curve Reference was measured with the same setup and the detector switched off i e it represents the measurement system s noise floor Typical Spectral Noise APD430A Typical Spectral Noise APD430A2 ...

Страница 20: ... 2015 Thorlabs 18 APD430x Typical Spectral Noise APD430C ...

Страница 21: ... 2015 Thorlabs 5 Appendix 19 5 5 Drawings Distance between the surface of the active detector area and the front of the flange Distance A Type A2 Type C Type a 2 2 0 3 mm 2 2 0 3 mm 2 1 0 3 mm ...

Страница 22: ... 2015 Thorlabs 20 APD430x Dimensions APD430X Series Imperial ...

Страница 23: ... 2015 Thorlabs 5 Appendix 21 Dimensions APD430X M Series Metric ...

Страница 24: ...and a focusing lens Below is a possible arrangement The assembly in front of the APD430x comprises of a fiber collimator dependent on fiber a lens tube collimator adapter AD11F or AD12F dependent on collimator a SM1L1 lens tube with aspheric lens inside not visible above and a LM1XY X Y translation mount The beam out of the fiber is collimated transferred into a nearly parallel beam and afterwards...

Страница 25: ... 2015 Thorlabs 5 Appendix 23 5 7 Certifications and Compliances ...

Страница 26: ...oftware determined by Thorlabs for this unit to operate fault free provided that they are handled according to our requirements However Thorlabs does not warrant a fault free and uninterrupted operation of the unit of the software or firmware for special applications nor this instruction manual to be error free Thorlabs is not liable for consequential damages Restriction of warranty The warranty m...

Страница 27: ... this product In no event shall any liability exceed the purchase price of the product Please note that the content of this User Manual is neither part of any previous or existing agreement promise representation or legal relationship nor an alteration or amendment thereof All obligations of Thorlabs result from the respective contract of sale which also includes the complete and exclusively appli...

Страница 28: ... 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 Waste treatment on your own responsibility If you do not return an end of life unit to Thorlabs you must hand it to a company specialized in wast...

Страница 29: ...cronyms AC Alternating Current APD Avalanche Photo Diode CW Continuous Wave DC Direct Current LED Light Emitting Diode NEP Noise Equivalent Power RF Radio Frequencies Si Silicon SNR Signal to Noise Ratio UV Ultraviolet References 1 Hamamatsu Technical Information SD 28 ...

Страница 30: ...orlabs Sweden AB Mölndalsvägen 3 412 63 Göteborg Sweden Tel 46 31 733 30 00 Fax 46 31 703 40 45 www thorlabs com Email scandinavia thorlabs com France Thorlabs SAS 109 rue des Côtes 78600 Maisons Laffitte France Tel 33 970 444 844 Fax 33 811 38 17 48 www thorlabs com Email sales fr thorlabs com Brazil Thorlabs Vendas de Fotônicos Ltda Rua Riachuelo 171 São Carlos SP 13560 110 Brazil Tel 55 16 3413...

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