High Speed Photodetector, 320-1000 nm Battery Biased Silicon Detector, 1.2 GHz

The 818-BB-21 High Speed Silicon Optical Detector consists of a free-space 320 to 1000 nm Battery Biased Silicon detector with a 0.40 mm active diameter and a <300 ps rise time. It includes a built-in bias supply consisting of three standard 3 V lithium cells (9 V total bias) and a 50 ohm BNC connector output. The batteries are easily replaceable and by disconnecting the detector from the oscilloscope input, when not in use, you can extend the lifetime of the batteries. It is equivalent to Coherent's Model ET-2030 (P/N 120-10011-0001).

Silicon Free Space Optical Detectors

The 818-BB-21 and -40 consist of free-space, small and large area Silicon detectors, with rise times ranging from 300 ps to 1.5 ns. Each unit, other than the 818-BB-40, includes a built-in bias supply consisting of standard 3 V lithium cells and a 50 ohm BNC connector output. The 818-BB-40 comes with an external 24 VDC power supply.

UV-Enhanced Silicon Free Space Detector

The 818-BB-27 consists of a silicon detector with an enhanced ultraviolet response, making it well suited for the fourth harmonic Nd:YAG, YLF or Glass Lasers and Excimer Lasers. Additionally, its large active area and fast response time make it an excellent general-purpose biased detector for the 200 to 1100 nm wavelength region. To attain its fast response, this detector comes with a 24 VDC external power supply.

InGaAs Free Space Detectors

The 818-BB-30, -31, and -35 consist of free-space, small and large area InGaAs detectors, with rise times ranging from 300 ps to 1.5 ns for covering the 800-1750 nm wavelength range. Each unit includes a built-in bias supply consisting of standard 3 V lithium cells and a 50 ohm BNC connector output. The 818-BB-51 features an extended InGaAs photodetector with a wavelength range of 1475–2100 nm.

GaAs Free Space Detector

The 818-BB-45 high speed optical detector consists of free-space 40 µm diameter GaAs photodetector, with a 30 ps rise time and 12.5 GHz bandwidth. It includes a built-in bias supply consisting of single 3 V lithium cell and a 50 ohm BNC connector output. The batteries are easily replaceable and by disconnecting the detector from the oscilloscope input, when not in use, you can extend the lifetime of the batteries.

Optical Post Mounting

An 8-32 threaded hole at the bottom of 818-BB biased photoreceivers allows for optical post mounting.

Handle With ESD Care

These detectors are very susceptible to damage by electrostatic discharge (ESD). Please use ESD protective measures, like the FK-STRAP , when unpacking and handling these devices.

Rise Times as Fast as 25 ps

The 818-BB-35 and 818-BB-45 photodiode detector modules offer a low-cost solution for ultra-fast measurements offering a 12.5 GHz bandwidth. These detectors are suitable for applications where detector rise time of <25 ps (<30 ps for 818-BB-45) are required for Q-switched and Ultrafast Laser output analysis. These detectors also utilize 3 V lithium cells (supplied).

Specifications

Technical Specs

Optical Input
Free Space
Device Type
Biased Detector
Detector Diameter
0.4 mm
Active Area
0.4 mm²
Detector Material
Silicon
Detector Type
PIN
Acceptance Angle
10°
Wavelength Range
320-1000 nm
3 dB Bandwidth
DC to 1.2 GHz
Rise Time
300 ps
Responsivity
0.47 A/W @ 830 nm
Output Connector
BNC
Amplified
No

Bias Voltage
9 V
Cut-off Frequency
1.2 GHz
Dark Current
<0.1 nA
Junction Capacitance
<1.5 pF
Measurement Type
Beam shape, frequency
Reverse Breakdown
20 V
NEP
<0.01 pW/√Hz
Fall Time
<300 ps
Saturation Current
3 mA
Power Requirements
Three 3V lithium batteries (Duracell DL2430 or equivalent)
Thread Type
8-32 and M4

Optical Input
Free Space
Device Type
Biased Detector
Detector Diameter
0.4 mm
Active Area
0.4 mm²
Detector Material
Silicon
Detector Type
PIN
Acceptance Angle
10°
Wavelength Range
320-1000 nm
3 dB Bandwidth
DC to 1.2 GHz
Rise Time
300 ps
Responsivity
0.47 A/W @ 830 nm
Output Connector
BNC
Amplified
No

Bias Voltage
9 V
Cut-off Frequency
1.2 GHz
Dark Current
<0.1 nA
Junction Capacitance
<1.5 pF
Measurement Type
Beam shape, frequency
Reverse Breakdown
20 V
NEP
<0.01 pW/√Hz
Fall Time
<300 ps
Saturation Current
3 mA
Power Requirements
Three 3V lithium batteries (Duracell DL2430 or equivalent)
Thread Type
8-32 and M4

Resources & Downloads

Related Products

Similar

Description	Compatibility	Avail.	Price
818-BB-31FC Bulkhead High Speed Photodetector, 800-1750 nm Battery Biased InGaAs Detector, 2 GHz	UNIVERSAL		$640
1601FS-ACFree Space Optical Receiver, 320-1000 nm Silicon, 30 kHz to 1 GHz, AC-Coupled	UNIVERSAL	FREE 2-day shipping on thousands of products on Newport.com Learn More	$1,570
818-BB-21AOptical Receiver, AC coupled, 320-1000 nm Biased Silicon Detector, 1.2 GHz	UNIVERSAL	FREE 2-day shipping on thousands of products on Newport.com Learn More	$700

Frequently Purchased Together

	Compare	Description	Compatibility	Drawings, CAD & Specs	Avail.	Price
		818-BB-30High Speed Photodetector, 800-1750 nm Battery Biased InGaAs Detector, 2 GHz	UNIVERSAL		FREE 2-day shipping on thousands of products on Newport.com Learn More	$560

High Speed Photodetector, 320-1000 nm Battery Biased Silicon Detector, 1.2 GHz

Model: 818-BB-21

Product Series Overview