NIR Single Photon Detector Free-Running/Gated | SIMTRUM Photonics Store

The ID Qube NIR Free-Running brings a major breakthrough for single-photon detection in freerunning mode at telecom wavelengths. It provides a cost-effective solution for applications in which asynchronous photon detection is essential such as photon correlation or time of flight measurements. Moreover it is especially suited for applications such as Lidar where compactness is strongly required. 

 

The detector offers a gate input port connector dedicated to avoid saturation or undesired detections. The cooled InGaAs/InP avalanche photodiode and associated electronics have been specially designed to achieve low dark count and afterpulsing rates in free-running mode. The device is available in free-space or fibre-coupled version (MMF62.5) compatible with both SMF and MMF62.5 fibre.

Options availabe for Dark Count Rate: Standard (STD) OR Low Noise (LN)

 

 

Key Benefits 

• Asynchronous detection mode (free-running)

• 10%, 15% and 20% quantum efficiency

• 1 µs- 100 µs adjustable deadtime

• Timing resolution typically 150 ps

• Low dark and afterpulsing rates

• Free-space or MMF optical input option

 

General Specifications

• Spectral range: 900 to 1700 nm

• Quantum detection efficiency: 10, 15 and 20 %

• Adjustable dead time 1 - 100 µs

• Operating mode: Free-running and gate mode

 

Items Included:

60W AC/DC +12V green power adapter

User guide on USB Key

Power cable

2m USB cable

 

The ID Qube NIR Free-Running can operate at three detection probability levels of 10%, 15% and 20% with a deadtime between 1 μs and 25 μs. The arrival time of photons is reflected by a 100 ns LVTTL pulse available at the SMA connector with a timing resolution as low as 150 ps at 20% efficiency. A simple USB interface allows the user to set the efficiency level and the deadtime.

 

 

Efficiency The calibration is carefully made in house using equipement calibrated   by the swiss metrology institute (METAS).		Dark Count Rate The dark count rate strongly depends 2 settings: efficiency and deadti-me. By playing with the 2 settings, it is possible to optimize efficiency,  afterpulsing and dark count rate for each dedicated experiment.
Low Jitter The jitter of a SPAD strongly improves with its quantum efficiency as  shown on the curve below. The ID Qube NIR Free-Running offers a  best-in-class jitter of 150 ps at 20% efficiency at 1550 nm. The here  below represented jitter figures may vary from diode to diodes. Note  that the 25% efficiency setting is only available with the ID Qube NIR  Gated version.		Compact The ID Qube is very small and suited for applications such as LiDAR  where compactness is strongly required.

 

Principle of Operations

In contrast with usual gated operations of detectors based on InGaAs/InP avalanche photodiodes (APDs), the ID Qube-NIR-FR operates in free-running (asynchronous) mode. The APD is biased above its breakdown voltage in the so-called Geiger mode. Upon photon absorption, the photon arrival time is reflected by the rising edge of a 100 ns width LVTTL pulse at the output. The ID Qube NIR Free-Running has been designed to provide a fast avalanche quenching, thus limiting the afterpulsing rate. This allows the operation at reasonably short deadtimes of values that can be optimized depending on the applications and the efficiency level.

User Friendly Software

The ID Qube NIR Free-Running comes with an intuitive software that allows the user to set the efficiency level and the deadtime through a simple USB interface. The module can also operate disconnected from the PC. The settings are reloaded upon each power up.

The ID Qube NIR Gated is a fast-gated single photon detector optimized for telecom wavelengths. It provides a cost-effective solution for applications in which synchronous photon detection is essential such as quantum communications especially Quantum Key Distribution. It is also well suited to applications such as LiDAR where compactness is required. 

 

The detector offers a gate input designed to avoid saturation or undesired detections and can also be operated in Free-Running mode. The cooled InGaAs/InP avalanche photodiode and associated electronics have been specially designed to achieve low dark count and afterpulsing rates for fast gated operations. The device is available in free-space or fibre-coupled version (MMF62.5) compatible with both SMF and MMF62.5 fibre.

 

Options availabe for Dark Count Rate: Standard (STD) OR Low Noise (LN)

 

Key Benefits

• Gate & free-running modes

• up to 25% quantum efficiency

• 1 µs to 100 µs adjustable deadtime

• Timing resolution typically 150 ps

• Low dark count and afterpulsing rates

• Free-space or MMF optical input option

• Gate input port.

General Specifications

• Spectral range: 900 to 1700 nm

• Quantum detection efficiency: 2.5% - 25% in steps of 2.5%

• Adjustable dead time 1 - 100 µs 

• Operating mode: gate (up to 100 MHz) or free-running mode

 

Items Included: 

-60W AC/DC +12V green power adapter

-Power cable

-User guide on USB Key

-2m USB cable

 

The ID Qube NIR Gated can operate at detection probability levels from 10% to 25% with a deadtime between 100 ns and 100 μs. In gated mode it accepts gates as short as 1 ns with a maximum repetition frequency of 100 MHz. The arrival time of photons is reflected by a 100 ns LVTTL/NIM (user-selectable) pulse available at the SMA connector with a timing resolution as low as 225 ps at 20% efficiency.

 

 

Efficiency The calibration is carefully performed in house using equipment calibrated  by the Swiss metrology institute (METAS).		Dark Count Rate The dark count rate strongly depends on 2 settings: efficiency and deadtime. By playing with the 2 settings, it is possible to optimize efficiency, afterpulsing and dark count rate (DCR) for each dedicated experiment. In gated mode, the DCR per gate also depends on the   gate duration. Shorter gates allow for a lower DCR rate.   Dark count probabilty measurement in gated mode Pulsed mode: 10 MHz gate frequency, 2 ns pulse width, no dead -time. The values strongly vary depending on the APD.
Low Jitter The jitter of a SPAD strongly improves with its quantum efficiency. The ID  Qube NIR Gated offers a best-in-class jitter of 225 ps at 20% efficiency at  1550 nm. The here below represented jitter figures may vary from diode to diodes. Note that the 25% efficiency setting is only available with the ID      Qube NIR Gated version.		Compact The ID Qube is very small and suited for applications such as LiDAR where compactness is strongly required.

 

Principle of Operations

External-gating mode

The avalanche photodiode (APD) is biased above breakdown during gates of adjustable width and frequency. External gating is a synchronous mode based on a gate signal provided by the user at the GATE-IN connector (any logic level between -2V and +2V is accepted). As a consequence of a photon-absorption-induced avalanche event within the gate, the detection counter is incremented and a pulse is outputted at the PHOTON-OUT connector. The quenching electronics closes the gate and a dead time is applied resulting in one or several blanked pulses after a detection. 

 

 

Free-running mode

The ID Qube NIR Gated can also operate in free-running (asynchronous) mode. The APD is biased above its breakdown voltage in the so-called Geiger mode. Upon photon absorption, the photon arrival time is reflected by the rising edge of a 100 ns width LVTTL/NIM pulse at the output. The ID Qube NIR Gated has been designed to provide a fast avalanche quenching, thus limiting the afterpulsing rate. This allows operation at reasonably short deadtimes that can be optimized depending on the application and the set efficiency level.

 

 

User Friendly Software

The ID Qube comes with an intuitive software that allows the user to set the efficiency level and the deadtime through a simple USB interface. The module can also operate disconnected from the PC. The settings are reloaded upon each power up.

 

Please download the specification of Free-running  found here: Link

Please download the specification of Gated found here: Link

For assistance: please contact us at info@simtrum.com

 

General Specifications
Parameter	Gated	Free-running	Units
Wavelength Range	900-1700		nm
Deadtime Range	0.1-100		μs
Deadtime Step	100		ns
Output pulse voltage	LVTTL/NIM
Output pulse width	100		ns
Optical fibre coupling	MMF62.5 or free-space
Efficiency range calibrated at λ=1.55 μm	10-25	10, 15 or 20	%
Efficiency resolution(steps)	5	-	%
Timing Resolution (FWHM) at 20% efficiency	225	150	ps
Dark count rate at (efficiency)	10 / 15 / 20		%
STD	1.2 / 3  / 6		Khz
LN	0.8 / 1.5 / 3		Khz
Gate-in max frequency	100	TBD	MHz
Gate-in min pulse duration	1		ns
Gate-in voltage range	-2 to 2		V
Gate-in coupling	DC
Gate-in threshold voltage range	-2 to 2		V
Gate-in threshold voltage resolution (steps)	1		mV
Output connector	SMA
Optical connector	FC/PC pigtail
Operating Temperature	+10 to +35		°C
Dimensions	95 x 95 x 95		mm
Weight	1		kg
Cooling time	5		min
Power Supply
Input Voltage	90~264VAC - 135~370VDC
Frequency Range	47~63		Hz
AC Current	1.4A / 115VAC 1A / 230VAC

Supplied Accessories 

• 60W AC/DC +12 V green power adapter 

• Power cable

• 1.8 m USB cable 

• Optical fibre cleaner 

• User guide on USB key

IDQ Qube NIR Free Running

Applications

*Detailed Articles Coming Soon!

• Quantum communication

• Quantum physics and optics

• Time of flight measurement (OTDR, LIDAR)

• Fluorescence Lifetime measurements

 

Click the links for more info regarding IDQ Qube NIR Free Running

>Singlet oxygen detection

>Single-photon detectors used in free space communication

>Single-photon OTDR

>TCSPC at wavelengths 900nm-1700nm

>Coincidence detection

 

IDQ Qube NIR Gated

Applications

*Detailed Articles Coming Soon!

• Quantum communication & Quantum Key Distribution 

• Quantum physics and optics 

• Fluorescence Lifetime measurements

• Time of flight measurement (OTDR, LIDAR)

 

 

Click the links for more info regarding IDQ Qube NIR Gated

>Singlet oxygen detection

>Single-photon detectors used in free space communication

>Single-photon OTDR

>TCSPC at wavelengths 900nm-1700nm

>Coincidence detection

Infrared Single Photon Detector(SPD)

Model	Wavelength Range	Jitter	QE	Dark Count Rate
NIR Single Photon Detector (Dual Channels)	900-1700nm	<100ps		≤2e-6/gate @10% SPDE
Super Conducting Nanowire System	780 - 1625nm	20- 40ps	>80% over min 100nm	<1Hz  to <100Hz
NIR Single Photon Detector (900-1700)	900 - 1700nm		10%, 20% @1550nm	≤2e-6/gate @10% SPDE
NIR Single Photon Detector Free Running/Gated	900 - 1700nm	<150ps	up to 35%	0.8 to 6 Khz
NIR Single Photon Detector Low Dark Count	900 - 1700nm	<150ps	25%	50 t0 200 Hz

 

Timing Tagging Devices
	Ultra-fast Pulse Generator for TCSPC
	Time-Correlated Single-Photon Counting System
	ID1000 Timing Controller

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