Generation of a microresonator soliton comb via current modulation of a DFB laser
Generation of a microresonator soliton comb via current modulation of a DFB laser
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DOI：
10.1364/osac.409885
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发表时间：
2020-01
期刊：
影响因子：
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通讯作者：
K. Nishimoto;K. Minoshima;T. Yasui;N. Kuse
中科院分区：
文献类型：
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作者：
K. Nishimoto;K. Minoshima;T. Yasui;N. Kuse
耗散克尔微谐振器孤子梳(以下简称孤子梳)作为紧凑型频率梳已经得到了迅速的发展。大范围、高速度的梳状孤子扫描在激光雷达、光谱学等应用中具有重要意义，需要泵浦连续波(CW)激光器的大范围快速频率扫描以及微谐振器的谐振频率。在这里，我们演示了分布反馈(DFB)激光器大范围、快速度地进行梳状扫描时产生孤子梳的过程。与传统的泵浦连续激光器(即外腔二极管激光器：ECDL)相比，DFB激光器可以在没有跳模的情况下进行更大范围和更快的频率扫描。此外，由于DFB激光器的扫描速度很快，只需控制DFB激光器的注入电流就可以产生单个孤子梳，大大简化了系统，而不需要任何额外的光学调制器，如载波抑制单边带调制器(CS-SSB调制器)、声光调制器(AOM)和辅助连续激光器。
Dissipative Kerr-microresonator soliton combs (hereafter called soliton combs) have been rapidly progressing as compact frequency combs. Comb mode scanning of the soliton combs with a large range and fast speed is of paramount importance for applications such as LiDAR and spectroscopy, requiring large and rapid frequency scanning of a pump continuous-wave (CW) laser as well as resonance frequency of a microresonator. Here, we demonstrate the generation of a soliton comb by a distributed feedback (DFB) laser toward comb mode scanning with a large range and fast speed. Compared with conventional pump CW lasers (i.e. external cavity diode lasers: ECDLs), DFB lasers can be frequency-scanned more largely and rapidly without mode-hopping. In addition, because of the fast scan speed of the DFB laser, a single soliton comb is generated simply by controlling the injection current of the DFB laser, greatly simplifying the system without having any additional optical modulators such as a carrier-suppressed single-sideband modulator (CS-SSB modulator), acousto-optic modulator (AOM), and auxiliary CW laser.