- Five Models Optimized for Different Spectral Ranges
- OSA201C: 350 - 1100 nm
- OSA202C: 600 - 1700 nm
- OSA203C: 1.0 - 2.6 µm (10 000 - 3846 cm-1)
- OSA205C: 1.0 - 5.6 µm (10 000 - 1786 cm-1)
- OSA207C: 1.0 - 12.0 µm (10 000 - 833 cm-1)
- Two Operating Modes
- Spectrum Obtained Using Michelson Interferometer and Fourier Transform
- Operated by Included Windows® Laptop with Pre-Installed Software
- Straightforward, Intuitive, and Responsive Interface
- Real-Time Math Operations and Statistical Analysis
- Libraries for LabVIEW™, Visual C++, Visual C#, and Visual Basic
Thorlabs' Optical Spectrum Analyzers (OSAs) perform highly accurate spectral measurements. Compatible with fiber-coupled and free-space light sources, these compact benchtop instruments suit a wide variety of applications, such as analyzing the spectrum of a telecom signal, resolving the Fabry-Perot modes of a gain chip, and identifying gas absorption lines.
Our Optical Spectrum Analyzers acquire the spectrum via Fourier transform, using a scanning Michelson interferometer in a push/pull configuration. This approach enables a high-precision Wavelength Meter mode with seven significant figures and ±1 part-per-million accuracy, allows robust statistical analysis of the acquired spectra, and provides broadband spectral measurements with every scan. Details are provided in the Design tab.
All of Thorlabs' OSAs accept FC/PC-terminated fiber patch cables and collimated free-space beams up to Ø6 mm. Details on compatibility are in the Specs and Free-Space Coupling tabs, respectively. For wavelengths from 2 µm to 5.5 µm, we offer fluoride single mode and fluoride multimode fiber patch cables. Optical Spectrum Analyzers with other fiber input receptacles are available by contacting Tech Support.
These instruments are designed to measure CW light sources. They also work in some applications where a pulsed light source is used; details may be found on the Pulsed Sources tab.
Our stock instruments are not designed for applications where it is necessary to recover small signals, including fluorescence detection and Raman spectroscopy. If your application would benefit from increased detection sensitivity, please refer to the Custom OSAs tab for some of our capabilities.
to contact us about this upcoming product!
OSA R&D Manager
To help ensure that our Optical Spectrum Analyzers will meet your application needs, we would be pleased to provide the following:
- Demo Units for Trial Use in Your Lab
- Example Measurements
- Evaluation of Suitability for Your Application
- "Virtual Device" Software Demo (See Software Tab)
If you would like to take advantage of any of these services, or if you have feedback or questions, I'd be happy to assist!
Click to Enlarge
Due to its broad wavelength responsivity, the OSA207C's noise floor is higher than that of our other Optical Spectrum Analyzers, which achieve lower noise floors at the expense of having narrower wavelength ranges. This OSA will easily detect lasers and other narrowband sources, but many broadband sources will not have sufficient power spectral density to be detected. This plot compares the OSA207C's noise floor in Power Density mode to an ideal 1900 K black body and Thorlabs' SLS202L
Stabilized Broadband Light Source (which was measured with an OSA205C).
Optical Spectrum Analyzers Comparison
||350 - 1100 nm
||-50 dBm/nmc (350 - 500 nm)
-60 dBm/nm (500 - 1100 nm)
||600 - 1700 nm
||-65 dBm/nm (600 - 700 nm)
-70 dBm/nm (700 - 1700 nm)
||1.0 - 2.6 µmd
(10 000 - 3846 cm-1)
||1.0 - 5.6 µm
(10 000 - 1786 cm-1)
||1.0 - 12.0 µm
(10 000 - 833 cm-1)
|-30 dBm/nm (1.0 - 2.0 µm)
-40 dBm/nm (2.0 - 12.0 µm)