High-pressure low-temperature optical dephasing of rhodamine 101 in PMMA

✍ Scribed by Bruce J. Baer; Robert A. Crowell; Eric L. Chronister

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 540 KB
• Volume: 237
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(95)00312-r

✦ Synopsis

High pressure (0-30 kbar) is used to investigate the effect of increased density on the temperature-dependent optical dephasing of rhodamine 101 (Rhl01) in polymethyl methacrylate (PMMA). Photon echo measurements have been performed on Rhl01-doped PMMA at temperatures between 1.2 and 2.1 K at pressures up to 30 kbar. The 20% volume compression at 30 kbar resulted in little change in either the magnitude or the temperature dependence of the optical dephasing rate. The pressure insensitive homogeneous linewidth F= 110 T 1"35 MHz is discussed in terms of the two level system model often used to characterize the optical dynamics of glasses.