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Questions related from Jeong Bin Cho
Even though multi-photon absorption is fascinating phenomenon, recently I am agonizing about its applicability. Second harmonic generation is used in lasing materials or so, however, I have never...
29 April 2024 2,640 1 View
what I've heard is the self-trapped exciton is another name of small polaron. But can I ask what the difference and definition of self-trapped exciton and polaron? Sincerely,
22 December 2023 4,158 0 View
Recently we obtained TCSPC system, but, spec of our main laser has pulse width 30-ps, and 50 Hz repetition rate. So, it seems the laser diode that give us the input time seems not detecting the...
22 November 2023 9,902 1 View
we are looking for the THG phase-matching materials that is stable in the air. but we cannot find it. Like AgGaSe2 in SHG, is there a good THG phase-matchable (around 1800 nm excitation) reference...
23 June 2023 9,393 0 View
As you know, Beer-Lambert law is I=I0exp(-a*d) where a is absorption coefficient and d is sample thickness. my question is if a ~104 cm-1 and d ~ 100 um, the I would be quite small compare to...
09 May 2023 9,890 5 View
recently I am building home-made UV-Vis absorption spectrum set-up in our lab, but the big problem is happened. What I am going to do is obtain absorption spectrum of perovskite, but, as PL of it...
02 February 2023 8,825 5 View
