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搭建完成了基于单偏振助推光学放大器的傅里叶域模式锁定扫频激光源,并在此基础上实现了倍频傅里叶域模式锁定扫频激光源,将光源的成像速度提高了一倍。该倍频激光源输出功率达到2mW左右,扫描频率为45kHz,输出光谱的中心波长为1 315nm,光谱宽度为107nm。利用该光源进行相干层析成像实验时,系统的A-Scan速率为90kHz,纵向分辨率为12.9μm左右,相干长度为0.9mm左右,灵敏度为105dB。
The Fourier domain mode-locked laser source based on the single polarization-assisted optical amplifier is built and a frequency-doubled Fourier domain mode-locked laser source is achieved. The imaging speed of the light source is improved by one Times The frequency doubling laser source output power of about 2mW, the scanning frequency of 45kHz, the output spectrum of the center wavelength of 1 315nm, the spectral width of 107nm. When using this light source for coherent tomography experiments, the A-Scan speed of the system is 90 kHz, the vertical resolution is about 12.9 μm, the coherence length is about 0.9 mm, and the sensitivity is 105 dB.