高斯束谐振系统对引力波频率和方向的选择效应

Selective effect to frequency and direction of gravitational waves on gaussian beam resonance system

高斯束谐振系统为早期宇宙遗留的随机高频引力波的探测开启了一个非常重要的窗口.计算结果表明,当入射引力波频率和高斯束不同时,高斯束谐振系统产生的一阶扰动光子流没有观测效应;当入射引力波的传播方向与高斯束对称轴的正方向不同时,高斯束谐振系统产生的一阶扰动光子流将降低几个数量级,即高斯束谐振系统只对沿某一特定方向传播的高频遗迹引力波产生有效的响应.因此,高斯束谐振系统对高频遗迹引力波的频率和传播方向具有良好的选择效应.

Gaussian beam resonance system （GBRS） opens a very important window for detection of relic stochastic high frequency gravitational waves （HFGWs） of early universe. The results of calculation show that the first-order perturbation photon flux produced by this system has no observable effect when the GWs frequency is different from that of Gaussian beam. The first-order perturbation photon flux produced by GBRS will be reduced by several orders of magnitude when the propagation direction of GWs is different from that the positive direction of the symmetrical axis of Gaussian beam, i. e., GBRS only responds to relic HFGWs that propagate along a specific direction. Therefore, GBRS have a useful selective effect with respect to the frequency and propagation direction of relic HFGWs.