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Multi-wavelength Generation at 1.55 mum from an External Cavity semiconductor Laser

机译:来自外腔半导体激光器的1.55毫米的多波长产生

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Optical analog to digital conversion schemes require a sampling source of high repetition rate, low temporal jitter, low amplitude noise, and short pulse duration to achieve the desired sampling rate and number of bits of resolution. We report on the development of an actively mode-locked semiconductor external cavity laser system where the emission is comprised of multiple wavelengths nominally centered around 1.55 microns. Cavity design includes an intra-cavity grating to produce a spatially dispersed optical spectral filtering plane. Amplitude filtering in this spectral plane serves to flatten the effective gain and a rectangular aperture array selects those wavelengths which are allowed to lase. Modelocked at 311 MHz and producing 8 spectral lines, the laser provides a sampling rate of approximately 2.5 GHz. Temporal interleaving of the pulse train by factor 4 increases the sampling rate to 10 GHz.
机译:光学模拟到数字转换方案需要高重复率,时间抖动,低幅度噪声和短脉冲持续时间的采样源,以实现所需的采样率和分辨率的比特数。我们报告了一种积极模式锁定的半导体外腔激光系统的开发,其中发射包括多个波长标称以1.55微米为中心的。腔设计包括腔内光栅,以产生空间分散的光谱滤波平面。在该光谱平面中的幅度滤波用于使有效增益变平,并且矩形孔径阵列选择允许液位的那些波长。在311MHz上造型并产生8个光谱线,激光器提供约2.5GHz的采样率。脉冲序列通过因子4的时间交织将采样率提高到10 GHz。

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