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FLD02 Fluorescence Photodetector

FLD02 fluorescence photodetector is designed for ultra-weak light signal detection with high responsivity and compact structure. It offers two material options of Si and InGaAs for different wavelength ranges, and is widely used in fluorescence detection, chemical analysis and biological aerosol testing.

Model：FLD02

Tags： FLD02 photodetector fluorescence photodetector weak light detection high responsivity photodetector Si photodetector InGaAs photodetector biochemical analysis POCT detection

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Product Overview

The FLD02 Fluorescence Photodetector is a high-performance photodetection module engineered for ultra-weak light signal detection, especially for fluorescence signals. Equipped with a high transimpedance amplifier, it features ultra-high responsivity and can capture extremely faint fluorescence signals stably. The product is available in two core material versions (Silicon and InGaAs) to cover different spectral response ranges, with a compact housing design that enables easy installation and measurement in narrow spaces.

Key Features

High responsivity for ultra-weak fluorescence signal detection
Two material options: Si (320-1100nm) and InGaAs (900-1750nm)
Compact housing, suitable for measurement in narrow spaces
Standard M4/M6 threaded mounting holes for easy installation
Stable performance with low noise
50Ω output impedance, SMA female connector
Wide operating voltage range (9-12V)Applications：
Fluorescence detection and analysis
Chemical composition analysis
Biological aerosol detection
POCT (Point-of-Care Testing) applications
Protein analysis and biological detectionSpecifications：

Specifications

Silicon Version (FLD02A-350/FLD02A-150)

Parameter	FLD02A-350	FLD02A-150
Core Material	Si	Si
Wavelength Range	320-1100nm	320-1100nm
Photosensitive Area	2.4×2.4mm	2.4×2.4mm
Responsivity	0.6A/W @ 960nm	0.6A/W @ 960nm
Bandwidth (High-res load)	DC-350Hz	DC-150Hz
Rise Time (High-res load)	1ms	2.5ms
Gain (High-res load)	1.1×10^9 V/W	0.94×10^10 V/W
Saturated Optical Power	4.5nW	550pW
Noise Voltage (High-res load)	8mVpp	20mVpp
Maximum Output Voltage (High-res load)	5V	5V
Operating Voltage	9-12V	9-12V
Operating Current	<200mA	<200mA
Output Impedance	50Ω	50Ω
Output Coupling	DC	DC
Output Connector	SMA female	SMA female
Operating Temperature	-10~65℃	-10~65℃
Storage Temperature	-40~85℃	-40~85℃

InGaAs Version (FLD02C-150)

Parameter	Specification
Core Material	InGaAs
Wavelength Range	900-1750nm
Photosensitive Area	500μm
Responsivity	0.9A/W @ 1654nm
Bandwidth (High-res load)	DC-150Hz
Rise Time (High-res load)	2.5ms
Gain (High-res load)	0.6×10^8 V/W
Saturated Optical Power	8.3nW
Noise Voltage (High-res load)	3mVpp
Maximum Output Voltage (High-res load)	5V
Operating Voltage	9-12V
Operating Current	<200mA
Output Impedance	50Ω
Output Coupling	DC
Output Connector	SMA female
Operating Temperature	-10~65℃
Storage Temperature	-40~85℃

Mechanical Dimensions

Response Curve

FAQ

Q：Do you have an unboxing picture of the photodetector?

A：When you buy our photodetectors, we will deliver SMA to BNC RF cable, and power supply for free.
Q: What are the advantages of your photodetectors compared to Thorlabs?
A: We support custom development and we offer better prices.
Q: What is the lead time for photodetector modules?
A: Basically, we have more than 90% of detectors in stock, only a few models need 3 weeks lead time.
Q: Do you support the sale of those countries, and is the shipping included?
A: Our service is available worldwide, regardless of country or region. Shipping is included.
Q: Who are your typical customers?
A: More than 100 top universities and research institutes in China have chosen us and given us high evaluations, such as: Chinese Academy of Sciences, CEC, Tsinghua University, Peking University and other clients.