Spectral flattening of supercontinua with a spatial light modulator

Spectral flattening of supercontinua with a spatial light modulator
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使用空间光调制器实现超连续谱的光谱平坦化

DOI:
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发表时间:
2013
期刊:
Optics & Photonics - Optical Engineering + Applications
影响因子:
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通讯作者:
T. Udem
T. Udem
中科院分区:
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文献类型:
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作者:
R. Probst;T. Steinmetz;T. Wilken;G. K. L. Wong;H. Hundertmark;S. Stark;P. Russell;T. Hänsch;Ronald Holzwarth;T. Udem

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我们演示了从最初的高度结构化的超连续谱,在光子晶体光纤中获得飞秒脉冲的产生与平坦的强度分布的宽光谱。这是通过使用基于液晶的空间光调制器以恒定水平截断光谱来实现的。该技术是有用的天文光谱仪校准使用频率梳,它允许均衡的校准线的光功率。这通过最大化每条线的信噪比来实现改进的校准精度。
We demonstrate the generation of broad spectra with a flat intensity distribution from originally highly structured supercontinua, obtained with femtosecond pulses in a photonic crystal fiber. This is accomplished by truncating the spectra at a constant level using a liquid crystal based spatial light modulator. The technique is useful for astronomical spectrograph calibration using frequency combs, where it allows to equalize the optical power of the calibration lines. This enables an improved calibration accuracy by maximizing each line’s signal-to-noise ratio.