Cooperative pulses.
We introduce the concept of cooperative (COOP) pulses which are designed to compensate each other's imperfections. In multi-scan experiments, COOP pulses can cancel undesired signal contributions, complementing and generalizing phase cycles. COOP pulses can be efficiently optimized using an extended version of the optimal-control-based gradient ascent pulse engineering (GRAPE) algorithm. The advantage of the COOP approach is experimentally demonstrated for broadband and band-selective pulses.
Braun
Michael
M
Department of Chemistry, Technische Universität München, 85747 Garching, Germany.
Glaser
Steffen J
SJ
D000465:Algorithms; D016014:Linear Models; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000706:statistics & numerical data*; D011846:Radio Waves