Quantum Cascade Photodetector


This is a ultrafast mid-infrared photodetector with a response bandwidth of 20 GHz.
QCD explores the application such the high frequency and high time resolved measurement like a Heterodyne detection in mid-infrared region.
・Ultrafast MIR photodetector with 20 GHz response
・Response frequency range (-3 dB): DC to 20 GHz
・Peak sensitive wavelength: 4.65 μm
・Photosensitivity: 1 mA/W (Typ.)
・No cooling, and no operation bias are required

Peak sensitive wavelength typ. 4.65 μm
Photosensitivity typ. 1.0 mA/W
Detectivity typ. 1.5 × 109 cm・Hz1/2/W
Noise equivalent power typ. 3.0 × 10-10 W/Hz1/2
Cut-off frequency typ. 20 GHz
Connector type SMA
Lens Focusing lens
Aperture Φ4.5 mm

Ultrashort pulse waveform measurement

●Measurement example

●Measurement configuration

Spectral response (example)

Response frequency (example)


The paper reporting the performance of quantum cascade photodetector with the results of experiment.

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