Avalanche Photodetector

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Product Description
  • Wavelength coverage 200-1700 nm
  • Fixed gain/Adjustable gain
  • Spatial input/Fiber input
Avalanche Photodetectors (APDs) utilize internal gain mechanisms to enhance sensitivity. A high reverse bias voltage is applied to the avalanche diode to generate a strong electric field. When an incident photon generates an electron-hole pair, the electric field accelerates the electrons, leading to the production of secondary electrons through impact ionization. The resulting electron avalanche produces a gain factor of several hundred, represented by the multiplication factor M. APDs are suitable for applications with low optical power levels. LBTEK offers APDs with a wavelength range covering 200–1700 nm, available in two gain types: adjustable gain and fixed gain. The input options include fiber-optic and free-space configurations, fully adapting to different application scenarios.
Avalanche Photodetector
  • Spectral Response Range: 300/400-1000 nm; 900-1700 nm
  • Fixed Gain / Adjustable Gain
  • Free Space Optical Input

    LBTEK's avalanche photodetector series covers silicon and indium gallium arsenide types, offering both adjustable gain and fixed gain options. They are suitable for low-light power level applications and can precisely meet various low-light detection needs. The adjustable gain series allows users to adjust the reverse bias voltage across the diode via a rotary knob on the side of the housing, thereby changing the gain level. Using a BNC-SMA signal cable, connect the photodetector's signal interface to downstream acquisition devices such as oscilloscopes. The detector's mechanical housing features SM05 internal threads and SM1 external threads on the surface, along with M4 threaded holes at the bottom for easy mounting onto posts. Each photodetector comes with a power supply.

    Note: This product series includes a sleeve with SM1 internal threads, which can be removed as needed during use (both the STEP and PDF files include this sleeve).

   The appearance of the fixed gain models has been updated, and both old and new appearances may be shipped randomly.

Avalanche Photodetector Installation Method

Product Model
gain type
Spectral response range
bandwidth
NEP (Noise Equivalent Power)
Unit Price
Compare
Lead Time
APD-S01A 300-1000 nm1.5 MHz0.82 pW/√Hz$1255.12today
APD-S10A 400-1100 nm10 MHz0.11 pW/√Hz$889.04today
APD-S400A 400-1100 nm400 MHz0.64 pW/√Hz$889.04today
APD-S10C 1000-1700 nm10 MHz0.42 pW/√Hz$1150.52today
APD-S400C 1000-1700 nm400 MHz1.8 pW/√Hz$1150.523 weeks
APD-S1GA NewFixed Gain400-1000 nmDC-1 GHz1.4 pW/√Hz$1176.674 weeks
APD-AS10A NewAdjustable Gain400-1000 nmDC-10 MHz0.12 pW/√Hz$954.414 weeks
APD-S1.8GA NewFixed Gain400-1000 nmDC-1.8 GHz2.5 pW/√Hz$1255.124 weeks
APD-AS400A NewAdjustable Gain400-1000 nmDC-400 MHz0.65 pW/√Hz$954.414 weeks
APD-S1GC NewFixed Gain900-1700 nmDC-1 GHz3.3 pW/√Hz$1176.674 weeks
APD-AS10C NewAdjustable Gain900-1700 nmDC-10 MHz0.42 pW/√Hz$1281.264 weeks
APD-AS400C NewAdjustable Gain900-1700 nmDC-400 MHz2.0 pW/√Hz$1281.264 weeks
Product Model
gain type
Spectral response range
bandwidth
NEP (Noise Equivalent Power)
Unit Price
Compare
Lead Time
APDU-S50A2 NewFixed Gain200-1000 nmDC-50 MHz0.21 pW/√Hz$1372.785 weeks
APDU-S50A NewFixed Gain400-1000 nmDC-50 MHz0.2 pW/√Hz$1372.785 weeks
APDU-S50C NewFixed Gain900-1700 nmDC-50 MHz0.46 pW/√Hz$2484.085 weeks
APDU-AS10A2 NewAdjustable Gain200-1000 nmDC-10 MHz0.09 pW/√Hz$1372.785 weeks
APDU-AS10A NewAdjustable Gain400-1000 nmDC-10 MHz0.05 pW/√Hz$1372.785 weeks
APDU-AS400A2 NewAdjustable Gain200-1000 nmDC-400 MHz0.17 pW/√Hz$1372.785 weeks
APDU-AS400A NewAdjustable Gain400-1000 nmDC-400 MHz0.16 pW/√Hz$1372.785 weeks
APDU-AS01A2 NewAdjustable Gain200-1000 nmDC-0.1 MHz2.5 fW/√Hz$1307.415 weeks
APDU-AS01A NewAdjustable Gain400-1000 nmDC-0.1 MHz3.6 fW/√Hz$1307.415 weeks
APDU-AS10C NewAdjustable Gain900-1700 nmDC-10 MHz0.13 pW/√Hz$2484.085 weeks
APDU-AS400C NewAdjustable Gain900-1700 nmDC-400 MHz0.45 pW/√Hz$2484.085 weeks
APDU-AS1600C1 NewAdjustable Gain1260-1650 nm0.3~1600MHz1.2 pW/√Hz$1738.865 weeks
Fiber Optic Avalanche Photodetector
  • Spectral Response Range: 400-1000 nm; 1000-1700 nm
  • Fixed Gain
  • Fiber Optic Input
    LBTEK's fiber-optic avalanche photodetector series covers silicon and indium gallium arsenide types, suitable for low optical power level applications in fiber optic paths. Connect the photodetector's signal interface to downstream acquisition equipment such as oscilloscopes via BNC-SMA signal cables. The mechanical housing of the detector features an M4 threaded hole at the bottom for easy mounting onto rods. Each photodetector comes with a power supply.
    Due to product appearance updates, old and new appearances will be shipped randomly

Fiber Optic Avalanche Photodetector Installation Diagram

Product Model
Spectral response range
bandwidth
NEP (Noise Equivalent Power)
Unit Price
Compare
Lead Time
APD-FS10A 400-1000 nmDC-10 MHz0.11 pW/√Hz$732.15today
APD-FS400A 400-1000 nm400 MHz0.64 pW/√Hz$732.151week
APD-FS10C 1000-1700 nmDC-10 MHz0.42 pW/√Hz$732.15today
APD-FS400C 1000-1700 nmDC-400 MHz1.8 pW/√Hz$732.15today
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