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采用量子理论研究V型和A型双模关联发射激光(CEL).V型原子的两高能级具有相干性,A型原子的两低能级具有相干性.结果表明,V型和A型CEL不但能够呈现双模无反转激光,而且双模无反转激光的相对相位和相对振幅的量子噪声能够被抑制到真空态水平.
Quantum theory is used to study the V-type and A-type dual-mode associated lasers (CELs). The two high energy levels of the V-type atoms are coherent and the two low-level A-type atoms have coherence.The results show that V- The dual-mode non-inverted laser can be presented, and the relative phase and relative amplitudes of the quantum noise of the dual-mode non-inverted laser can be suppressed to the level of the vacuum state.