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[Fizinfo] Szemináriumok - Seminars: Benjamin Klee

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  • From: Szeminárium koordinátor <sem-admin AT>
  • To: SZFI Szeminárium <seminar AT>,Fizinfo <fizinfo AT>
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  • Subject: [Fizinfo] Szemináriumok - Seminars: Benjamin Klee
  • Date: Thu, 23 Jun 2022 06:00:04 +0200 (CEST)
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SZFI SeminarBenjamin KleeWigner RCP SZFIDirectional white-light emitters
powered by a low-power continuous-wave IR laser diode: Unexplained non-linear
optical effects as a result of disorderTuesday, 28 June 2022, 10:00, Bldg 1,
Meeting ID: 836 0994 2103 Passcode: 067877A few years ago materials
consisting of small molecules with a pseudo-tetrahedral structure have been
found to exhibit a strong non-linear optical response to infrared laser
irradiation: In a crystalline state, the well known second-harmonics
generation (SHG) effect occurs while in an amorphous state instead a
continuous spectrum covering the visible regime (hence appearing white) is
observed. The most interesting property of this white-light generation (WLG)
effect is that the low divergence of the exciting laser is retained during
the process, providing a highly directional source of white light. Multiple
materials have been found to exhibit this effect but still its existence in
an unknown sample cannot be predicted and the mechanism of this effect is yet
to be understood. In this talk, I will give an overview of the current
knowledge of this active field of research. Since amorphicity seems to be a
requirement for the WLG effect, I will focus on problems and progress
regarding the structure determination of these materials.&nbsp;Minden
érdeklődőt szívesen látunk! - Everyone is welcome to attend.Róbert
Juhászsem-admin AT

  • [Fizinfo] Szemináriumok - Seminars: Benjamin Klee, Szeminárium koordinátor, 06/23/2022

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