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Calibrated Photodiodes

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Calibrated Photodiodes




  • Si, Ge, and InGaAs Photodiodes Available
  • NIST Traceable
  • Photodiodes Shipped with Calibration Curves

we offers five photodiodes, with NIST traceable calibration, that ship from stock. These include one Indium Gallium Arsenide (InGaAs), two Silicon (Si), and two Germanium (Ge) photodiodes.

 

Calibration Features:

  • Responsivity Measured Every 10 nm Over the Spectral Range of the Photodiode
  • Measurement Uncertainty ±5%
  • NIST Traceable

Each photodiode comes with its own data table and graph of the responsivity vs wavelength.

The responsivity of a particular photodiode varies from lot to lot. Due to this, the photodiode you receive may have a slightly different response than what is represented in the graphs in the info icons below, but will include calibration data. To the right, a graph for the FDS1010 photodiode shows how significantly you can expect the response to vary. Data was collected from 104 photodiodes. Minimum, Average, and Maximum responsivity was calculated at each data point and has been plotted.

Please note that inhomogeneities at the edges of the active area of the detector can generate unwanted capacitance and resistance effects that distort the time-domain response of the photodiode output. Thorlabs therefore recommends that the incident light on the photodiode is well centered on the active area. This can be accomplished by placing a focusing lens or pinhole in front of the detector element.

 


Si Photodiodes with NIST Traceable Calibration

 

Two NIST traceable calibrated Si photodiodes are available from stock. Si photodiodes are sensitive across the visible and into the near infrared spectrum. The FDS100-CAL and FDS1010-CAL are both large area Si photodiodes and are packaged in a can and on a square ceramic substrate respectively. For detailed information about their specifications and to view responsivity, dark current, and capacitance graphs, please click on the info icons in the table below.

Item # WavelengthActive
Area
Rise/Fall
Timea
NEP
(W/Hz1/2)
Dark
Current
CapacitancePackageVbias,maxCompatible
Sockets
FDS100-CAL   350 - 1100 nm 13 mm2 10 ns
@ 5 V
1.2x10-14
@ 900 nm, 20 V
0.5 nA
@ 10 V
(Typ.)
48 pF nA
@ 10 V (Typ.)
TO-5 Can
(Ø0.36")
25 V STO5S
STO5P
FDS1010-CAL   400 - 1100 nm 100 mm2 45 ns
@ 5 V
2.07x10-13
@ 970 nm, 5 V
1.05 nA
@ 5 V
(Typ.)
432 p
@ 5 V (Typ.)
0.45" x 0.52"
Ceramic Wafer
25 V Not Available
  • RL = 50 O

 

Ge Photodiodes with NIST Traceable Calibration

 

Two NIST traceable calibrated Ge photodiodes are available from stock. Ge photodiodes are sensitive in the near infrared spectrum from 800 - 1800 nm. The FDG03-CAL and FDG05-CAL are AR Coated for 1300 to 1550 nm and are packaged in a can and on a square ceramic substrate respectively. For detailed information about their specifications and to view responsivity, dark current, and capacitance graphs, please click on the info icons in the table below.

Item # WavelengthActive
Area
Rise/Fall
Timea
NEP
(W/Hz1/2)
Dark
Current
CapacitancePackageVbias,maxCompatible
Sockets
FDG03-CAL   800 - 1800 nm 7.1 mm2 500 ns
@ 3 V
1.0x10-12
@ 1500 nm
1.0 µA
@ 1 V
(Typ.)
3250 pF
@ 1 V (Typ.)
TO-5 Can
(Ø0.36")
3 V STO5S
STO5P
FDG05-CAL   800 - 1800 nm 19.6 mm2 220 ns
@ 5 V
4.0x10-12
@ 1550 nm
10 µA
@ 5 V
(Typ.)
3000 p
@ 5 V (Typ.)
0.275" x 0.310"
Ceramic Wafer
5 V Not Available
  • RL = 50 O
 
InGaAs Photodiode with NIST Traceable Calibration

One NIST traceable calibrated InGaAs photodiode is available from stock. InGaAs photodiodes are sensitive in the near infrared spectrum from 800 to 1700 nm. The FGA21-CAL has a PIN structure that results in fast zero bias Rise / Fall times. For detailed information about its specifications and to view responsivity, dark current, and capacitance graphs, please click on the info icon in the table below.

Item # WavelengthActive AreaRise/Fall
Timea
NEP
(W/Hz1/2)
Dark CurrentCapacitancePackageVbias,maxCompatible
Sockets
FGA21-CAL   800 - 1800 nm 3.1 mm2 66 ns
@ 0 V
3.0x10-14
@ 1550 nm
50 nA @ 1 V (Typ.)
200 nA @ 1 V (Max)
100 pF @ 3 V
(Typ.)
150 pF @ 3 V
(Max)
TO-5 Can
(Ø0.36")
3 V STO5S
STO5P
  • RL = 50 O

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