TY - CONF AU - Vladislav Gerginov AU - Svenja Knappe AU - Vishal Shah AU - John Kitching AU - Leo Hollberg C2 - 14th International School on Quantum Electronics , Sunny Beach, 1, SZ DA - 2007-01-01 00:01:00 LA - en M1 - 6604 PB - 14th International School on Quantum Electronics , Sunny Beach, 1, SZ PY - 2007 TI - Reduction of optical field noise by differential detection in atomic clocks based on coherent population trapping ER -