Buying Balanced Photodetectors
Balanced photodetectors are suitable for sensitively measuring differences in optical powers between two inputs while largely suppressing common noise. They are used in applications such as sensitive absorption measurements, optical heterodyne detection, and quantum optics experiments.
Making Good Purchase Decisions
As the most professional photonics purchasing portal, RP Photonics helps you to not only to find all relevant suppliers (not limited to our advertisers), but also to make good purchasing decisions.
NEW: Structured Decision Process
Purchasing involves a lot of responsibility. We recommend that you apply best practice by using the following structured process: Go through the following expandable sections, complete the form and finally come to a purchase decision. You can then print that to a PDF for documenting the process.
Our article on best practices for purchasing and another one explaining this tool give you valuable insights.
Suppliers for Balanced Photodetectors
12 suppliers for balanced photodetectors are listed in the RP Photonics Buyer's Guide, out of which 3 present their product descriptions. Both manufacturers and distributors can be registered.
Suppliers with Advertising Package
presenting their product descriptions
 Luruper Hauptstrasse 1 22547 Hamburg Germany See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A1.324)! |  Our balanced detectors are engineered for quantum optics applications with low electronic noise and high quantum efficiencies. The on-board demodulation circuit offers the possibility to generate error signals and implement locking loops for the experiment or application. Available standard wavelengths include 1064 nm and 1550 nm. Other wavelengths and fiber coupling are possible upon request. Visit our website to learn more and see how our technology can support your research. Product-specific web page |
 Lasers, Optics, Electronics. Made in Germany. ALPHALAS GmbHBertha-von-Suttner-Str. 5 37085 Göttingen Germany |  ALPHALAS offers balanced photodetectors with bandwidths from DC up to 10 GHz and wavelength ranges from 170 nm to 2600 nm. Both free-space and fiber-coupled models are available. Product-specific web page |
 Sophisticated Tools for Signal Recovery FEMTO Messtechnik GmbHKlosterstraße 64 10179 Berlin Germany See us at LASER World of Photonics 2025 in Munich, June 24–27 (hall A3, booth 538) and LASER World of Photonics 2025 in Munich, June 24–27 (booth A3.538)! |  FEMTO's low-noise balanced photoreceivers of the HBPR series enable the differential measurement of optical signals with wavelengths from 320 nm to 1700 nm and bandwidths up to 500 MHz. The optical inputs are optionally free space or fiber-coupled and Si or InGaAs. The HBPR series is characterized by a very low input noise (NEP) down to 3.7 pW/√Hz and a high common mode rejection (CMRR) of up to 55 dB. The output coupling is switchable (AC/DC), the gain can be set 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. HBPR photoreceivers are ideally suited for highly sensitive and precise acquisition of laser pulses, even with high repetition rates and rapidly changing signal shapes. Customized versions are available upon request. Product-specific web page |
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Other Suppliers
| Beijing Keyang Photonics Co. Ltd. China |
| Beijing Rofea Optoelectronics Co., Ltd. China |
| HC Optical Science and Tech China |
| Insight Photonic Solutions, Inc. United States |
| Koheron France |
| Laser Components GmbH Germany |
| Newport Corporation United States |
| Wieserlabs UG (haftungsbeschränkt) Germany |
| Xiamen Fengxing Optoelectro-tek Co., Ltd. China |
