The Low-noise balanced photoreceivers of the HBPR series offer differential measurement of optical signals in the wavelength range from 320 nm to 1700 nm (SI or InGaAs) with bandwidths of up to 500 MHz. The optical inputs are free space or fiber-coupled. Among other things, the devices enable highly sensitive, precise detection of laser pulses even at high repetition rates and rapidly changing signal shapes.
The photoreceivers use two photodiodes selected in pairs, which are connected in anti-parallel, and a subsequent low-noise transimpedance amplifier in order to detect the differential signal. The HBPR series is characterized by very low input noise (NEP) down to 3.7 pW/√Hz and high common mode rejection (CMRR) of up to 55 dB. Versions with Si or InGaAs photodiodes and bandwidths from 100 MHz to 500 MHz are available. The output coupling is switchable (AC/DC), the gain adjustable in two stages and the bandwidth can be limited to 20 MHz. Two monitor outputs with 10 MHz bandwidth enable fast, separate acquisition of the individual input signals.
Applications Include:
Optical spectroscopy
Coherent heterodyne detection
Homodyne detection of optical quantum states
Optical coherence tomography (OCT)
Interferometric measurements
Optical delay measurements
Differential optical front end for oscilloscopes, spectrum analyzers, A/D converters and lock-in amplifiers
The Low-noise balanced photoreceivers of the HBPR series offer differential measurement of optical signals in the wavelength range from 320 nm to 1700 nm (SI or InGaAs) with bandwidths of up to 500 MHz. The optical inputs are free space or fiber-coupled. Among other things, the devices enable highly sensitive, precise detection of laser pulses even at high repetition rates and rapidly changing signal shapes.
The photoreceivers use two photodiodes selected in pairs, which are connected in anti-parallel, and a subsequent low-noise transimpedance amplifier in order to detect the differential signal. The HBPR series is characterized by very low input noise (NEP) down to 3.7 pW/√Hz and high common mode rejection (CMRR) of up to 55 dB. Versions with Si or InGaAs photodiodes and bandwidths from 100 MHz to 500 MHz are available. The output coupling is switchable (AC/DC), the gain adjustable in two stages and the bandwidth can be limited to 20 MHz. Two monitor outputs with 10 MHz bandwidth enable fast, separate acquisition of the individual input signals.
Applications Include:
- Optical spectroscopy
- Coherent heterodyne detection
- Homodyne detection of optical quantum states
- Optical coherence tomography (OCT)
- Interferometric measurements
- Optical delay measurements
- Differential optical front end for oscilloscopes, spectrum analyzers, A/D converters and lock-in amplifiers
