Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.
C. CÎRTOAJE1,* , E. PETRESCU1, C. MOŢOC1
The self-diffraction phenomenon of a laser radiation in nematic cells only appears if high power lasers are used as they determine a molecular reorientation of the nematic director. The action of the magnetic field on the molecular reorientation is significant even for low field intensities (lower than the critical field for magnetic Freedericksz transition). Under the magnetic field a decrease of the diffraction rings on the projection screen is observed. From the theoretical study of the phenomena it results that even if the number of the diffraction rings becomes smaller when increasing the external magnetic field, the time period needed to reach the maximum number of rings does not suffer a significant change. The theoretical estimations were in good agreements with experimental results obtained when using a 300 μm planar nematic cell..
Nematic liquid crystal, Laser irradiation, Optical non-linearities.
C. CÎRTOAJE, E. PETRESCU, C. MOŢOC, Self-focusing in nematic liquid crystals subjected to magnetic fields, Optoelectronics and Advanced Materials - Rapid Communications, 5, 2, February 2011, pp.106-111 (2011).
Submitted at: Jan. 18, 2011
Accepted at: Feb. 17, 2011
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
Active accounts were imported to the new platform and assigned a random password by default. In order to access your account you need to access the login page and go through the Lost Password dialog (involves the system sending you an email with instructions) in order to reset your password. This step is necessary as passwords are kept in hashed form and the new platform uses modern hashing algorithms incompatible with the previous ones.