• Fast Rise and Fall
• 3-Pin TO-5 Can

The Thorlabs FGA10 photodiode is ideal for measuring both pulsed and CW fiber light sources, by converting the optical power to an electrical current. The detector is a TO-5 package with an anode, cathode, and case connection. The photodiode anode produces current as a function of the incident light power and the wavelength.

Inhomogeneity on the edge of an active area of the detector can generate unwanted capacitance and resistance that distorts the time-domain response of a photodiode. 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.

• Wavelength Range: 800 - 1800 nm
• Active Area: 0.79 mm²
• Diode Package Type: TO-5
• Rise / Fall Time^a: 7 ns / 7 ns @ 5 V
• NEP (W/Hz^1/2): 2.5 x 10^-14
• Dark Current: 25 nA (Typ.) @ 5 V
• Junction Capacitance^a: 80 pF @ 0 V
• Sensor Material: Indium Gallium Arsenide

a. Typical Values. R_L = 50 Ω