Phys.org July 19, 2022 A team of researchers in the US (National Energy Research Laboratory, University of Colorado, University of Kentucky) selected a tetracenethiophene compound called TES TIPS-TT, which has a crystal structure in which all molecules share a common axis. Using time-resolved paramagnetic resonance spectroscopy they characterized the spin state of the electrons in the material. The observed spin sublevel populations are consistent with predictions from the JDE model, including preferential 5TT0 formation at z ‖ B0, with one caveat—two 5TT spin sublevels have little to no population. This may be due to crossings between the 5TT and 3TT […]
Tag Archives: quantum chaos
Physicists fight laser chaos with quantum chaos to improve laser performance
Phys.org August 18, 2018 The instabilities in the laser are caused by optical filaments, light structures that move randomly and change with time, causing chaos. An international team of researchers (USA – Yale University, UK, Singapore) designed a D-shaped cavity for the laser to induce quantum chaos in the light bouncing around. By creating quantum (wave) chaos in the cavity the laser itself remained steady. The quantum chaos acts on a smaller scale than the wavelength of the light, creating the optical ‘hills’ that help to dispel the optical ‘tornadoes’. They gained insight into the processes and cavity shapes likely […]