Picosecond tri-transition and two-color photon echoes in a doped molecular solid

✍ Scribed by Koos Duppen; D.P. Weitekamp; Douwe A. Wiersma

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 505 KB
• Volume: 106
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(84)80215-8

✦ Synopsis

Ngerzborglr 16. 9717 AC Groningen. The h'ctherlnnds Rcceivcd 20 February 1984 Picosecond tri-level photon echoes arc gcncratcd among vibronic transitions of pentacenc doped into a naphthalcne host. The echoes arc generalcd with three excitation pulses of which the first enc. af wt. always c\ciics a vibronic transition in the pcntaccnc molecule. With the second excitation pulse at w2 and the third at wl. a tri-transition echo (TTE) is formed. With the time ordering of the second and third pulse rcvcrsed. a connected two-color stimulated echo (CZCSE) is generated. It is shown that. for small pulse an&s. tbc low-rcmperaturc decay of both echo effects is identical and rhat a smooth Iransition of one echo effect into the other occurs at the overlap in time between the second and third sxcitsrion pulse. Obscrvation of thcsc echoes further indicates that the inhomozencous broadening at the selected transitions is Strom& corrchted.