Imaging method for serial time-encoded amplified microscope
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摘要: 提出一种新的用于时间序列编码放大显微系统的成像方法，主要解决了非平带光谱激光源和放大过程的非平带增益问题，避免了脉冲边沿低水平振幅的浪费。使用通信波段1550 nm波长锁模脉冲激光源，以线扫描方式对USAF-1951分辨率板第一组别刻痕实现了清晰超快成像，有效地验证光学拉伸技术中的时间-空间-频率的一一映射特性和色散傅里叶变换中的放大过程，反映了该系统其在m尺度、MHz帧率成像领域的潜力。Abstract: A new imaging method for serial time-encoded amplified microscope is proposed, which eliminates the impact of spectrum ripples in the non-flat spectrum source and non-uniform gain. It can avoid the waste of low-level amplitude in the pulse edge. The time-space-frequency mapping in the optical time-stretch and amplification in the Dispersion Fourier Transform are demonstrated. A 1550 nm mode-locked pulse laser is used to project the USAF-1951 resolution target line by line, which reflects the potential application in micrometer scale and ultrafast imaging field.
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Key words:
- ultrafast optics /
- dispersion /
- near-infrared /
- spectrum imaging /
- imaging system
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