Redstone™ OSA305 Chapter 3: Using the OSA
Rev B, December 15, 2021 Page 3
Chapter 3 Using the OSA
3.1. Introduction
The Redstone Optical Spectrum Analyzer (OSA) is a general-purpose spectrum
analyzer for optical research and production applications. It has a user-friendly
Graphical User Interface (GUI) and can be controlled from a Windows
®
10 PC via
a High-Speed USB 3.0 port. It is equipped with an FC/PC fiber input receptacle
and a free-space input window for collimated beams up to Ø10 mm; however,
special designs with other input receptacles are available on request. The
frequency-locked reference laser can be accessed via the FC/APC connector on
the front panel. The instrument is designed for measurements of continuous-wave
(CW) light sources but works in some applications where pulsed light is used.
Please contact Technical Support at techsupport.se@thorlabs.com to discuss your
application if you have a pulsed source.
Figure 1 Front View of the Redstone OSA305
3.1.1. Software
The Redstone OSA305 is shipped with the software package pre-installed on the
laptop computer that is included with the purchase of this instrument. The software
has a customizable GUI for acquiring, inspecting, manipulating, and analyzing
spectra and interferograms. The software makes it easy to locate and track
spectral peaks or valleys, measure the optical input power over any wavelength
range, calculate an absorption spectrum in real-time, or track a large number of
parameters over time.
For usage with other computers the software is downloadable from the webpage.
3.2. Setup and Installation
Place the OSA on a flat and stable surface, and if the free-space input is to be
used, it is recommended to use two Thorlabs CF175 clamping forks on the
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