Application of precision engineering in laser transverse pumping 133Cs brain magnetometers

The transverse relaxation time of the laser pumping of
¹³³
Cs atomic vaporing. Even if the temperature rises, the extension of the energy distribution of the electron is suppressed the effect of a thermal extension by the quantization and can lower the oscillation threshold to the quantum-dot structure of the VCSEL without causing the decrease in the gain to the utmost limit. The design of the system that measures the brain magnetism at 100fT level. The cause brain magnetic field from 10
⁻¹³
T to 10
⁻¹⁴
T or more can be detected.