منابع مشابه
Photochemical Hole-Burning Spectroscopy of Bovine Rhodopsin and Bacterlorhodopsln
Photochemical hole burning has been observed at 1.5 K in bacteriorhodopsin (bR) and bovine rhodopsin at wavelengths spanning their lowest energy electronic absorption bands. Hole widths were -2500 cm-' full width at half-maximum (fwhm) in bacteriorhodopsin and -2400 cm-' fwhm in rhodopsin. The positions of the hole minima were insensitive to bum wavelength, indicating that minimal site selectio...
متن کاملNuclear-quadrupole optical hole burning in the stoichiometric material EuP5O14.
Hole burning, which is attributed to optical pumping of nuclear-quadrupole levels, has been observed in the stoichiometric rare-earth compound, EuP5O14 . The long lifetime of these holes (-60 min) implies slow nuclear-spin flip-flop rates. The small magnetic moment of Eu3+ has prevented conventional magnetic-resonance measurements on Eu3+ compounds, but hole burning provides a sensitive method ...
متن کاملOptical Spectroscopy of the Hole Spin in GaMnAs Acceptors
The spin state of holes bound to Mn acceptors in GaMnAs is investigated by optical spectroscopy. Concentrations of Mn from 10 to 10 cm were studied as a function of magnetic field and temperature. The photoluminescence from recombination of electrons with holes bound in the Mn-acceptor complex (MAC) displays multiple spectral peaks. The circular polarization of these peaks increases with increa...
متن کاملIs Gx 339 � 4 a Black Hole Candidate ? Optical Spectroscopy
We carried out spectroscopic and photometric observations of the candidate black-hole binary GX 339?4 during its low-hard and high-soft X-ray states. We have found that the emission lines from GX 339?4 have asymmetric, apparently round-topped prooles in the low-hard state (1997 May), and double-peaked prooles in the high-soft state (1998 April and August). Our data do not show obvious velocity ...
متن کاملObservation of laser-jitter-enhanced hyperfine spectroscopy and two-photon spectral hole-burning
Ž . We have observed laser-jitter-enhanced high-resolution spectra of three hyperfine states in the ground level H of 4 Pr :Y SiO using coherent population trapping and phase-correlated four-wave mixing. We have also observed optical 2 5 Raman pulse excited two-photon spectral hole-burning. The observed high-resolution spectra are due to a laser-jitter-suppressed Raman coherence window in an in...
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ژورنال
عنوان ژورنال: The Review of Laser Engineering
سال: 1984
ISSN: 0387-0200,1349-6603
DOI: 10.2184/lsj.12.232