Vibrational Two-Photon Emission from Coherently Excited Solid Parahydrogen
نویسندگان
چکیده
منابع مشابه
Time-resolved stimulated emission depletion in two-photon excited states.
A new approach to time-resolved fluorescence spectroscopy based on stimulated emission depletion (STED) of two-photon excited states is presented. Combined with time-resolved detection, STED can circumvent orientational averaging constraints and spontaneous emission selection rules inherent in all conventional techniques. Applications of STED to the study of molecular probe dynamics are present...
متن کاملMechanism of two-photon excited hemoglobin fluorescence emission.
Hemoglobin, one of the most important proteins in the human body, is composed of “heme” groups (iron-containing rings) and “globins” (proteins). We investigate the two-photon excited fluorescence of hemoglobin and its subunit components (heme and globin). We measure the hemoglobin fluorescence lifetime by using a streak camera of ps resolution and confirm that its lifetime is in femtosecond sca...
متن کاملTwo-photon excited highly polarized and directional upconversion emission from slab organic crystals.
Effective upconversion emission from an organic crystal of cyano-substituted oligo (p-phenylenevinylene) (CNDPASDB) based on two-photon absorption is presented. Frequency upconverted cavityless lasing, or amplified spontaneous emission, from the crystal pumped by a femtosecond laser of 800 nm was observed when the excitation energy exceeded the threshold of 1.3 mJpulse(-1)cm(-2). Its polarizati...
متن کاملTwo-photon excited hemoglobin fluorescence
We discovered that hemoglobin emits high energy Soret fluorescence when two-photon excited by the visible femtosecond light sources. The unique spectral and temporal characteristics of hemoglobin fluorescence were measured by using a time-resolved spectroscopic detection system. The high energy Soret fluorescence of hemoglobin shows the spectral peak at 438 nm with extremely short lifetime. Thi...
متن کاملObservation of two-photon emission from semiconductors
Two-photon emission is a process in which electron transition between quantum levels occurs through the simultaneous emission of two photons. This phenomenon is important for astrophysics and atomic physics, and semiconductor twophoton emission was recently proposed as a compact source of entangled photons, essential for practical quantum information processing, and three orders of magnitude mo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Physical Chemistry A
سال: 2017
ISSN: 1089-5639,1520-5215
DOI: 10.1021/acs.jpca.7b02011