Subharmonic transitions and Bloch-Siegert shift in electrically driven spin resonance
نویسندگان
چکیده
منابع مشابه
Turbo Spin Echo Bloch Siegert Shift B1 Mapping
An interesting method for B1 mapping based on the Bloch-Siegert (BLS) shift was recently presented (1,2) for gradient echo (FLASH) and Spin Echo (SE) sequences. This method uses off-resonant pulses before signal acquisition to encode the B1 information into the signal phase. Fast B1 mapping is possible since the repetition time has only minor influence on the quality of the phase information. I...
متن کاملB1 mapping by Bloch-Siegert shift.
A novel method for amplitude of radiofrequency field (B1+) mapping based on the Bloch-Siegert shift is presented. Unlike conventionally applied double-angle or other signal magnitude-based methods, it encodes the B(1) information into signal phase, resulting in important advantages in terms of acquisition speed, accuracy, and robustness. The Bloch-Siegert frequency shift is caused by irradiatin...
متن کاملLarge, valley-exclusive Bloch-Siegert shift in monolayer WS2.
Coherent interaction with off-resonance light can be used to shift the energy levels of atoms, molecules, and solids. The dominant effect is the optical Stark shift, but there is an additional contribution from the so-called Bloch-Siegert shift that has eluded direct and exclusive observation in solids. We observed an exceptionally large Bloch-Siegert shift in monolayer tungsten disulfide (WS2)...
متن کاملLevel Splitting in Association with the Multiphoton Bloch-Siegert Shift
We present a unitary equivalent spin-boson Hamiltonian in which terms can be identified which contribute to the Bloch-Siegert shift, and to the level splittings at the anticrossings associated with the Bloch-Siegert resonances. First-order degenerate perturbation theory is used to develop approximate results in the case of moderate coupling for the level splitting.
متن کاملApproximate Fourier domain expression for Bloch-Siegert shift.
PURPOSE In this study, a new simple Fourier domain-based analytical expression for the Bloch-Siegert (BS) shift-based B1 mapping method is proposed to obtain |B1+| more accurately while using short BS pulse durations and small off-resonance frequencies. THEORY AND METHODS A new simple analytical expression for the BS shift is derived by simplifying the Bloch equations. In this expression, the...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2015
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.92.054422