Electromagnetically induced transparency of⁸⁷Rb in a buffer gas cell with magnetic field

Abstract

We have studied the phenomenon of electromagnetically induced transparency (EIT) of 87 Rb vapor with a buffer gas in a magnetic field at room temperature. It is found that the spectral lines caused by the velocity selective optical pump effects get much weaker and wider when the sample cell mixed with a 5-Torr N2 gas while the EIT signal kept almost unchanged. A weighted least-square fit is also developed to remove the Doppler broadening completely. This spectral method provides a way to measure the Zeeman splitting with high resolution, for example, the Λ-type EIT resonance splits into four peaks on the D2 line of 87 Rb in the thermal 2-cm vapor cell with a magnetic field along the electric field of the linearly polarized coupling laser. The high resolution spectrum can be used to lock the laser to a given frequency by tuning the magnetic field.

Electromagnetically induced transparency in Λ-systems of 87Rb atom in magnetic field

“…The electromagnetically induced transparency (EIT), a quantum interference phenomenon, is related to increase in the transmission of a weak probe beam in presence of a strong coupling beam [1,2]. Since the conception of EIT, several applications of this phenomenon have attracted attention of researchers which include applications in optical communication network [3], optical switching devices [4,5], manipulation of group velocity of light and light storage [6][7][8][9][10], tight laser frequency locking [11], high resolution spectroscopy [12,13], atomic clocks [14], quantum information processing [15,16], highly sensitive magnetometery [17][18][19][20][21][22], velocimetry [23], etc.…”

Laser frequency offset-locking using electromagnetically induced transparency spectroscopy of 85 Rb in magnetic field

“…1(b), which is similar to our previous work. [22,23] Both the master and slave lasers (Moglabs) have external cavity structures with line-width around 100 kHz. The master laser serves as the coupling beam, locked by a modulated SAS, and the slave laser is taken as the probe one, scanning across the D 2 line to record the EIT spectrum.…”

Synthesis of Symmetrical Biaryls by Copper‐Catalysed Homocoupling of Aryltriazenes in Guanidinium Ionic Liquid

“…Procedure for synthesis of 1‐Aryltriazenes, Compound characterization data and NMR spectra for the isolated products are gathered in the SI file. Additional references cited within the Supporting Information [29–44] …”