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arXiv 2006.12397physics.opticsphysics.app-ph
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作为相位孤子的调频梳状波

Frequency-modulated combs as phase solitons

David Burghoff

摘要:

频率梳是具有相干均匀间隔线的光源。已经观察到,在某些激光系统中,可以形成其输出在时间上被频率调制(FM)的梳。在这种状态下,它们产生频率线性且周期性扫描的输出。这些结果已经在数字上得到了复制,但对其核心物理的彻底理解仍然是难以捉摸的。令人惊讶的是,我们发现这些激光器是由一个非线性薛定谔方程描述的,该方程的电势与电场的相位成正比。这个方程可以精确求解,并产生一个字段的相位是分段二次的时间-FM梳。这些结果可以用来推导FM梳的所有显着特征,我们的一般理论适用于任何非线性光学系统与大的内部增益。更一般地说,这一结果预示着新的相干态的光的发展相势,而不是幅度势。

英文摘要:

Frequency combs are light sources with coherent evenly-spaced lines. It has been observed that in certain laser systems, combs can form whose output is frequency-modulated (FM) in time. In this state, they produce an output whose frequency sweeps linearly and periodically. These results have been replicated numerically, but a thorough understanding of their core physics remains elusive. Surprisingly, we have found that these lasers are described by a nonlinear Schrodinger equation whose potential is proportional to the phase of the electric field. This equation can be solved exactly and produces a field whose phase is piecewise quadratic in time---an FM comb. These results can be used to derive all of the salient features of FM combs, and our general theory is applicable to any nonlinear optical system with large internal gain. More generally, this result portends the development of new coherent states of light governed by phase potentials rather than amplitude potentials.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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