Recently, ZWP grating diffraction imaging instrument has been applied in the research and teaching of bi-grating imaging effects by some universities. However, there are problems exposed in the use. The main problem is position location of bi-grating operation which hardly achieves the “Z” shape that is fit for imaging path, especially the diagonal direction deviation of the second grating when it is moving in the platform, which leads to measurement errors for the bi-grating diffraction imaging, and the experiment results are inaccurate. To the grating imaging instrument, the electronic control method has been studied, which is to control moving and rotation of gratings more easily and with high measurement accuracy. The new reform plan of the grating imaging instrument is done and tested, and the experiment results are compared with before reform undone.
Recent progresses in the investigation of nonlinear magneto-optics effects and the field of exploring fundamental
physical problems became possible largely due to the development of various frequency stabilized diode laser systems.
The typical frequency stabilization method is based on saturated absorption spectrum, which usually just stabilizes the
frequency to the center of the resonance line. In this paper, a laser frequency stabilization method is investigated based
on linear magneto-optical effect, which can extend the frequency stabilization tuning range to the wings of the resonance
line. The optical system is a sequence of a linear polarizer, a cesium atomic vapor cell, a λ/4 plate and a Wollaston prism
to separate two polarizing beams. The outgoing lights are detected by two photodiodes with the same type to get the
differential signal of intensities. With fixed angle of the λ/4 plate respect to the Wollaston prism, a small rotation of the
polarizer will produces a common offset of the differential signal, which will lead to movements of the zero-crossing
point along the frequency detuning axis. This behavior can be used to tune the laser frequency on the wings of the
resonance line. To analyze the properties and the theoretical value of differential signal of our experimental frequency
stabilization system, Jones matrix approach is used. The experimental results show that this method can be used in laser
frequency stabilization by extending the frequency tuning range to the wings of a resonance line.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.