THORLAB OSA(Optical Spectrum Analyzers)光譜儀

thorlab的OSA光譜儀最高解析度可到0.01nm；詳情歡迎聯絡

產品說明 (點擊展開觀看)

原文網址:https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=5276#ResolutionAndSensitivity

原理連結影片

Optical Spectrum Analyzers

Features

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
- Spectrometer Mode: 7.5 GHz Resolution (0.25 cm-1)
- Wavelength Meter Mode: 0.1 ppm Resolution (Only for <10 GHz Linewidth Sources)
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.

Click here to contact us about this upcoming product!

Olle Rosenqvist
OSA R&D Manager

Pre-Purchase Support

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!

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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

Item #a	Wavelength Range	Noise Floorb
OSA201C	350 - 1100 nm	-50 dBm/nmc (350 - 500 nm) -60 dBm/nm (500 - 1100 nm)	Absolute Power Power Density
OSA202C	600 - 1700 nm	-65 dBm/nm (600 - 700 nm) -70 dBm/nm (700 - 1700 nm)
OSA203C	1.0 - 2.6 µmd (10 000 - 3846 cm-1)	-70 dBm/nmd
OSA205C	1.0 - 5.6 µm (10 000 - 1786 cm-1)	-40 dBm/nm
OSA207Ce	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)

Please refer to the Specs tab for complete specifications.
Absolute Power mode is recommended for narrowband sources, while Power Density mode is recommended for broadband sources.
In the 350 - 500 nm range, the OSA201C will easily detect lasers and other narrowband sources, but broadband sources may not have sufficient power spectral density to be detected.
The OSA203C detector's temperature can be toggled between low-temperature (i.e., thermoelectrically cooled) and high-temperature (i.e., room temperature) modes. In low-temperature mode, this OSA achieves a very low noise floor of -70 dBm/nm, with a wavelength range of 1.0 - 2.5 µm. In high-temperature mode, the noise floor is -65 dBm/nm and the wavelength range is extended to 2.6 µm.
See the graph to the right.

Fourier Transform Optical Spectrum Analyzers

Zoom

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FC/PC Fiber Receptacle Behind Door (OSA202C Shown)

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Free-Space Optical Input Behind Door (OSA202C Shown)

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Rear-Mounted Hose Connections for Purging

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Ø1/2" Off-Axis Parabolic Mirror in CRM1P Rotation Mount in Front of Free-Space Input

Available in Five Wavelength Ranges from 350 nm to 12.0 µm
Two Optical Input Ports
- FC/PC Fiber-Coupled Input
- Free-Space Input with Four 4-40 Taps for Our 30 mm Cage System
Built-In Hose Connections for Optional Purging
Includes Windows® Laptop and All Other Items Shown in Shipping List Tab Above
Demo Units Available by Contacting Tech Support

Thorlabs' OSAs measure the optical power of both narrowband and broadband sources as a function of wavelength. The maximum spectral resolution of 7.5 GHz (0.25 cm-1) is set by the maximum optical path length difference of ±4 cm, as explained in the Design tab, while the high spectral accuracy of ±2 ppm (parts per million) is ensured by simultaneously measuring the interferogram of a stabilized 632.991 nm HeNe laser. For sources with linewidth < 10 GHz, the Wavelength Meter mode provides center wavelength measurements with 0.1 ppm resolution and ±1 ppm accuracy.

Fiber-Coupled and Free-Space Inputs
All of our OSAs directly accept fiber-coupled or free-space optical inputs. The fiber-coupled input is compatible with single mode and multimode FC/PC patch cables. For multimode patch cables made from standard silica glass, cores up to Ø50 µm and NA up to 0.22 are recommended; for those made from fluoride glass, cores up to Ø100 µm and NA up to 0.26 are recommended. Single mode patch cables provide the highest contrast. OSAs with other fiber input receptacles are available by contacting Tech Support.

The free-space input aperture accepts collimated input beams up to a maximum beam size of Ø6 mm. To align the input light with respect to the OSA's internal interferometer, a red, Class 1 alignment beam, which is activated by a rotating switch, is emitted from the aperture. (See 2:47 in the video above for a demonstration.) The input beam should be made collinear to the alignment beam for the OSA to provide optimal measurement accuracy. Four 4-40 taps around the input aperture enable compatibility with our 30 mm cage system; use cage rods no shorter than 1.5" to prevent attached cage components from clashing with the door.

Hose Inlets for Optional Purging
To reduce the presence of water absorption lines in the measured spectrum, our OSAs offer two 1/4" ID quick-connect hose connections on the back panel, through which the interferometer can be purged with dry air. Thorlabs' Pure Air Circulator Unit is ideal for this task. Purging the OSA is not generally necessary, since none of the optics are made from hygroscopic materials. An example spectroscopy setup is described in the Gas Spectroscopy tab above.

Based on your currency / country selection, your order will ship from Newton, New Jersey

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