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Biased Photodetectors

Operating wavelength covers 200-2600nm
Free-space optical input
Fastest rise time 1ns

The LBTEK biased photodetector series covers three types: Si, InGaAs, and Ge. These detectors combine low noise, fast response, and no gain characteristics, making them suitable for various photodetection applications. They offer excellent performance, with a fastest rise time of only 1 ns, and can directly receive free-space input optical signals. The detector comes with a built-in A23 battery to provide reverse bias. If a power supply is preferred, the DET-12V power kit on this product page can be purchased separately. Using a BNC-BNC signal cable, the signal interface of the photodetector can be connected to an oscilloscope or other data acquisition devices. Additionally, the side of the detector features a red battery check button. Without removing the battery, a simple press allows a quick check to see if the battery needs replacement, greatly improving operational convenience and efficiency.
Note: The product includes an SM1 internally threaded sleeve, which can be removed for use.

Conventional Biased Photodetector Installation Method

Product Model	Spectral response range	bandwidth	rise time	photosensitive size	Input coupling method	Unit Price	Lead Time
DETG50-770K	800-1800 nm	770 kHz	460 ns^a^b	5.0 mm	Free space	$562.19	4 weeks
DETG30-540K	800-1800 nm	540 kHz	650 ns^a^b	3.0 mm	Free space	$389.61	4 weeks
DETIN10-14M	900-2600 nm	14 MHz	26 ns^a^b	1.0 mm	Free space	$549.11	today
DETIN05-20M	900-2600 nm	20.6 MHz	18 ns^a^b	0.5 mm	Free space	$481.13	today
DETIN20-11M	800-1700 nm	11.7 MHz	30 ns^a^b	2.0 mm	Free space	$494.2	today
DETIN10-35M	900-1700 nm	35 MHz	12 ns^a^b	1.0 mm	Free space	$360.85	today
DETIN10-70M	500-1700 nm	70 MHz	5 ns^a^b	1.0 mm	Free space	$601.41	today
DETS36-25M	350-1100 nm	25 MHz	15 ns^a^b	3.6 mm	Free space	$143.82	today
DETS100-10M	320-1100 nm	10 MHz	36 ns^a^b	10 mm	Free space	$196.11	3 weeks
DETS10-350M	200-1100 nm	350 MHz	1 ns^a^b	1 mm	Free space	$183.04	3 weeks

High-Speed Biased Photodetectors

Operating wavelength covers 400-1700nm
Free-space input/fiber-coupled input
Fastest rise time 17ps

The LBTEK high-speed biased photodetector series includes Si, InGaAs, and GaAs types, covering a wavelength range of 400-3600 nm. It combines low noise, high-speed response, and no-gain characteristics, offering excellent performance. Regarding input options, the LBTEK high-speed biased photodetector series provides both free-space and fiber-coupled choices to meet different application needs. The fiber-coupled input can easily connect to FC/PC single-mode or multi-mode fibers; the free-space input is available with either an anti-reflection coated flat window or an uncoated spherical lens, providing flexibility for optical signal collection in complex environments. The detector comes with a built-in A23 battery for reverse bias. If you prefer to use a power supply, the power kit (DET-12V) on this product page can be purchased separately. The photodetector’s signal interface can be connected to downstream acquisition equipment, such as an oscilloscope, via a BNC-SMA signal cable.

Note: Other input coupling options can be customized for different models in this series. Please contact LBTEK technical support for details.

High-speed Biased Photodetector mounting method

Product Model	Spectral response range	bandwidth	rise time	photosensitive size	Input coupling method	Unit Price	Lead Time
HDETIN012-2G-L	800-1700 nm	2 GHz	140 ps^a^b	120 μm	Free Space (Spherical Lens)	$287.63	5 weeks
HDETIN15-1G-S	1500-3600 nm	1 GHz	250 ps^a^b	100 μm	Free Space (Window)	$2876.31	5 weeks
HDETIN8-1G-L	800-2400 nm	1 GHz	250 ps^a^b	100 μm	Free Space (Spherical Lens)	$1438.15	5 weeks
HDETIN4-1G-S	400-1700 nm	1 GHz	250 ps^a^b	100 μm	Free Space (Window)	$1124.37	5 weeks
HDETIN04-20G-L	800-1700 nm	20 GHz	17 ps^a^b	45 μm	Free Space (Spherical Lens)	$2222.6	5 weeks
HDETIN05-6G-L	800-1700 nm	6 GHz	60 ps^a^b	50 μm	Free Space (Spherical Lens)	$536.04	5 weeks
HDETIN010-3G-L	800-1700 nm	3 GHz	120 ps^a^b	100 μm	Free Space (Spherical Lens)	$339.93	5 weeks
HDETS07-2.5G-L	400-900 nm	2.5 GHz	130 ps^a^b	70 μm	Free Space (Spherical Lens)	$274.56	today
HDETS05-10G-L	400-900 nm	10 GHz	40 ps^a^b	50 μm	Free Space (Spherical Lens)	$1438.15	3 weeks
HDETIN08-5G-FC	800-1700 nm	5 GHz	100 ps^a^b	80 um	Fiber Optic Coupling (FC/PC)	$415.76	today
HDETIN08-5G-L	800-1700 nm	5 GHz	100 ps^a^b	80 um	Free space (ball lens)	$339.93	today
HDETIN08-5G	800-1700 nm	5 GHz	100 ps^a^b	80 um	Free space (window)	$339.93	today
HDETS025-1G-FC	400-1100 nm	1 GHz	1 ns^a^b	250 um	Fiber Optic Coupling (FC/PC)	$324.24	4 weeks
HDETS025-2G-FC	400-1100 nm	2 GHz	200 ps^a^b	250 um	Fiber Optic Coupling (FC/PC)	$324.24	today
HDETS025-2G-L	400-1100 nm	2 GHz	200 ps^a^b	250 um	Free space (ball lens)	$241.87	today
HDETS025-2G	400-1100 nm	2 GHz	200 ps^a^b	250 um	Free space (window)	$241.87	today

Bias Photodetector Power Supply Kit

DET power supply replacement
With LED indicator light
power adapter, used for DET series detectors

The DET-12V power kit includes the PDCT-12V power supply and a compatible power adapter, which can be used to replace the A23 battery in biased photodetectors. When in use, the power adapter replaces the battery and the spring battery cover, converting it to a powered supply, eliminating the hassle of battery replacement during long-term use. The DET-12V power kit serves as a replacement power source for the biased photodetectors on this product page, providing a sufficiently powered supply to help the biased photodetector achieve optimal operating conditions.

The power supply is connected to the detector through the power adapter, which serves as a central link.

	Product Model	Output voltage	Output current	Unit Price	Compare	Lead Time
	DET-12V New	±12 V	250 mA	$156		today