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THORLABS SPDMA, Operation Manual

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Page  6

MTN025859_D02

SPDMA

3 Operating Instructions

Whenever a TTL trigger input signal is used, the default TTL input needs  to  be  "Low".  Signal
from photon detection is sent to Pulse Out as the Trigger Input voltage switches to "High". High
and Low signal are specified in the section 

Technical Data

.

 Note 

"Trigger In" and "Pulse Out" are of a 50 

W

 impedance. Make sure that the trigger pulse source

is capable to work on a 50 

W

 load and that the device connected to "Pulse Out" operates at a

50 

W

 input impedance.

Summary of Contents for SPDMA

Page 1: ...Single Photon Detector SPDMA Operation Manual 2021 ...

Page 2: ...Version Date 1 0 08 Dec 2021 Copyright 2021 Thorlabs ...

Page 3: ...nd Trigger IN 4 Maintenance and Service 7 7 4 1 Troubleshooting 5 Appendix 8 8 5 1 Technical Data 9 5 2 Definitions 10 5 3 Performance Plots 10 5 3 1 Typical Photon Detection Efficiency 10 5 3 2 Pulse Out Signal 11 5 4 Dimensions 12 5 5 Safety 14 5 6 Certifications and Compliances 15 5 7 Return of Devices 15 5 8 Manufacturer Address 15 5 9 Warranty 15 5 10 Copyright and Exclusion of Liability 16 5...

Page 4: ...oking 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 this advice carefully This manual also contains NOTES and HINTS written in this form Attention Paragraphs preceded by this symbol explain hazards th...

Page 5: ...ntric with the input aperture which adds to the high quality of this device For flexible integration into optical systems the SPDMA accommodates any Thorlabs 1 lens tubes as well as the Thorlabs 30 mm Cage System The SPDMA can be mounted in metric or imperial systems due to 8 32 and M4 combi thread mounting holes The product includes an SM1T1 SM1 Coupler which adapts the external thread to an inte...

Page 6: ...tainer appears to be damaged keep it until you have inspected the contents for completeness and tested the SPDMA mechanically and electrically Verify that you have received the following items within the package 1 SPDMA Single Photon Detector 2 Plastic Cover Cap Item SM1EC2B on SM1T1 SM1 Coupler with an SM1RR SM1 Retaining Ring 3 Power Supply 12V 0 3 A 5 V 2 5 A with Power Cord Connector According...

Page 7: ...pters that are compatible with any number of Thorlabs 1 threaded accessories like ex ternal optics filters apertures fiber adapters or lens tubes The SPDMA is shipped with an SM1T1 SM1 coupler that adapts the external thread to an SM1 internal thread A retaining ring in the coupler holds the protective cover cap Please unscrew the coupler if needed For accessories please visit our website or conta...

Page 8: ...n and signal output changes with the gain set ting please reevaluate this parameter after changing the gain setting Note Trigger In and Pulse Out are of a 50 W impedance Make sure that the trigger pulse source is capable to work on a 50 W load and that the device connected to Pulse Out operates at a 50 W input impedance 3 4 Operating Principle The Thorlabs SPDMA uses a silicon avalanche photo diod...

Page 9: ...be adjus ted to the SPDMA This increases the photon detection efficiency but also the dark count rate Please be aware that the probability of afterpulsing slightly rises with higher gain settings and that adjusting the gain also affects the time between photon detection and signal output The dead time increases with decreasing gain 3 5 Block Diagram and Trigger IN The current pulse generated by an...

Page 10: ...ton detection is sent to Pulse Out as the Trigger Input voltage switches to High High and Low signal are specified in the section Technical Data Note Trigger In and Pulse Out are of a 50 W impedance Make sure that the trigger pulse source is capable to work on a 50 W load and that the device connected to Pulse Out operates at a 50 W input impedance ...

Page 11: ...nction occurs please contact Thorlabs for return instructions Do not remove covers 4 1 Troubleshooting APD over temperature indicated The temperature control circuit recognized that the actual temperature of the APD exceeded the set point Under normal operation conditions this should not happen even after long term operation However increase beyond the limits of the specified operating temperature...

Page 12: ...Max Dead Time Maximum Gain 35 ns Output Pulse Width 50 Ω load 10 ns Min 15 ns Typ 20 ns Max Output Pulse Amplitude 50 Ω load TTL High TTL Low 3 5 V 0 V Trigger Input TTL Signal 1 Low closed High open 0 8 V 2 V Afterpulsing Probability Gain Min 1 Typ General Power Supply 12 V 0 3 A 5 V 2 5 A Operating Temperature Range 2 0 to 35 C APD Operating Temperature 20 C APD Temperature Stability 0 01 K Stor...

Page 13: ...nt Rate This is the average rate of registered counts in the absence of any incident light and determines the minimum count rate at which the signal is dominantly caused by real photons The false detection events are mostly of thermal origin and can therefore be strongly suppressed by using a cooled detector Geiger Mode In this mode the diode is operated slightly above the breakdown threshold volt...

Page 14: ...Page 10 MTN025859_D02 SPDMA 5 Appendix 5 3 Performance Plots 5 3 1 Typical Photon Detection Efficiency 5 3 2 Pulse Out Signal ...

Page 15: ...Rev 1 0 08 Dec 2021 2021 Thorlabs Page 11 SPDMA 5 Appendix 5 4 Dimensions ...

Page 16: ...vered in this manual unless otherwise spe cified herein The statement for other products will appear in the respective accompanying doc umentation Note This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules and meets all requirements of the Canadian Interference Causing Equipment Standard ICES 003 for digital apparatus T...

Page 17: ...bility of the user The use of shielded I O cables is required when connecting this equipment to any and all op tional peripheral or host devices Failure to do so may violate FCC and ICES rules Attention Mobile telephones cellular phones or other radio transmitters are not to be used within the range of three meters of this unit since the electromagnetic field intensity may then exceed the maximum ...

Page 18: ...Page 14 MTN025859_D02 SPDMA 5 Appendix 5 6 Certifications and Compliances ...

Page 19: ...s starting with the date of shipment in accordance with and subject to the terms and conditions set forth in Thorlabs General Terms and Conditions of Sale which can be found at General Terms and Conditions https www thorlabs com Images PDF LG PO 001_Thorlabs_terms_and_ 20agreements pdf and https www thorlabs com images PDF Terms 20and 20Conditions 20of 20Sales_Thorlabs GmbH_English pdf 5 10 Copyri...

Page 20: ...cy WEEE Thorlabs verifies our compliance with the WEEE Waste Electrical and Electronic Equipment direct ive of the European Community and the corresponding national laws Accordingly all end users in the EC may return end of life Annex I category electrical and electronic equipment sold after August 13 2005 to Thorlabs without incurring disposal charges Eligible units are marked with the crossed ou...

Page 21: ...www thorlabs com ...

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