Fast gyro - Physicsphysics.wm.edu/~evmik/talks/2014_gyro_wm_qogroup_seminar.pdf · Fast gyro...
Transcript of Fast gyro - Physicsphysics.wm.edu/~evmik/talks/2014_gyro_wm_qogroup_seminar.pdf · Fast gyro...
Fast gyro
Eugeniy E. Mikhailov
The College of William & Mary, USA
SPIE 2014, Febrary 04, 2014
Eugeniy E. Mikhailov (W&M) 4wm in a ring cavity SPIE 2014 1 / 12
Sagnac effect
Eugeniy E. Mikhailov (W&M) 4wm in a ring cavity SPIE 2014 2 / 12
Cavity conditions
Eugeniy E. Mikhailov (W&M) 4wm in a ring cavity SPIE 2014 3 / 12
Atoms in the cavity and Frequency shift derivation
Eugeniy E. Mikhailov (W&M) 4wm in a ring cavity SPIE 2014 4 / 12
Negative dispersion sensitivity enhancement
Eugeniy E. Mikhailov (W&M) 4wm in a ring cavity SPIE 2014 5 / 12
Sensitivity estimate
Eugeniy E. Mikhailov (W&M) 4wm in a ring cavity SPIE 2014 6 / 12
Two level atom dispersion
Eugeniy E. Mikhailov (W&M) 4wm in a ring cavity SPIE 2014 7 / 12
3 coupled levels: EIT
Eugeniy E. Mikhailov (W&M) 4wm in a ring cavity SPIE 2014 8 / 12
N-bar scheme
Eugeniy E. Mikhailov (W&M) 4wm in a ring cavity SPIE 2014 9 / 12
Schematic experimental setup
Eugeniy E. Mikhailov (W&M) 4wm in a ring cavity SPIE 2014 10 / 12
Experimental setup
Eugeniy E. Mikhailov (W&M) 4wm in a ring cavity SPIE 2014 11 / 12
Goals
Short term, almost certain to workdemonstrate EIT in the cavity (almost done)
lock to the probe laser, sweep two-photon detuningshow that we can obtain gain with additional pump lasercavity + gain = laser: see the lasing if we have enough powerplay with gain to adjust dispersion, observe cavity line narrowing
Long term, less likely to just worksee amplification and lasing of counter propagating beam, withoutseeding
fall back scenario: seeding the counter propagation or counterpropagating pump/control
Electronics/laser lockslock cavity to yet another frequency related to the probe to avoidlock drop if we lose gain/transmissionpump laser frequency lockpower stabilizers
Spin the gyroEugeniy E. Mikhailov (W&M) 4wm in a ring cavity SPIE 2014 12 / 12