Nonlinear optical frequency conversion of an amplified Fourier Domain Mode Locked (FDML) laser
Nonlinear optical frequency conversion of an amplified Fourier Domain Mode Locked (FDML) laser
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DOI：
10.1364/oe.17.016801
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发表时间：
2009-09-14
期刊：
影响因子：
3.8
通讯作者：
Huber, Robert
中科院分区：
文献类型：
--
作者：
Leonhardt, Rainer;Biedermann, Benjamin R.;Huber, Robert
报道了傅里叶域锁模（FDML）激光器波长扫频输出的高效非线性光学频率转换。提出了利用有源光纤后放大实现FDML激光器功率定标的不同概念。一个两级后放大的FDML激光器的放大系数为300高达1.5 W的峰值功率被用来提供足够的功率电平的非线性转换。使用单模色散位移光纤（DSF），我们转换这个放大的输出，覆盖1541 nm和1545 nm之间的区域，从1572 nm到1663 nm的波长范围内通过调制不稳定性（MI）。对于这个四波混频过程，我们观察到类似于40%的效率。在1435 nm和1516 nm之间观察到反斯托克斯信号，具有较低的转换效率。除了使波长偏移之外，MI的效应还使得FDML激光器的波长扫描速率能够以类似于50至0.55nm/ns的因子显著增加。(C)2009年美国光学学会
We report on the highly efficient non-linear optical frequency conversion of the wavelength swept output from a Fourier Domain Mode Locked (FDML) laser. Different concepts for power scaling of FDML lasers by post-amplification with active fibers are presented. A two-stage post-amplification of an FDML laser with an amplification factor of 300 up to a peak power of 1.5 W is used to supply sufficient power levels for non-linear conversion. Using a single-mode dispersion shifted fiber (DSF), we convert this amplified output that covers the region between 1541 nm and 1545 nm to a wavelength range from 1572 nm to 1663 nm via modulation instability (MI). For this four wave mixing process we observe an efficiency of similar to 40%. The anti-Stokes signal between 1435 nm and 1516 nm was observed with lower conversion efficiency. In addition to shifting the wavelength, the effect of MI also enables a substantial increase in the wavelength sweep rate of the FDML laser by a factor of similar to 50 to 0.55 nm/ns. (C) 2009 Optical Society of America