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Single-Frequency Active Fiber Lasers

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Single-Frequency Fiber Lasers

Part of the book series: Optical and Fiber Communications Reports ((OFCR,volume 8))

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Abstract

As discussed in the previous chapter, the cavity length of a single-frequency fiber laser should be short enough (i.e., few centimeters) to realize a wide mode spacing for stable operation. Nevertheless, this in term requires the optical gain of the laser to be significant for high-efficiency operation. Since the doping concentration of rare-earth ions in general silica fiber is limited owing to the unwanted cluster formation phenomena, other glass hosts are required to overcome this limitation. In this chapter, we first introduce the multicomponent glass fiber as the doping host of rare-earth ions, enabling heavy doping concentration and significantly improved optical gain. With the newly developed active fiber, high-power operation of a single-frequency fiber laser is afterward discussed. An inevitable problem risen by high-power lasing is the thermal effect, which is then discussed in the third section. Subsequently, the thermal effect-induced laser noise is also discussed together with the coupling effect between frequency and intensity noise and amplified spontaneous emission noise, which are considerable in a high-gain fiber laser.

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Authors and Affiliations

  1. State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, China

    Zhongmin Yang, Shanhui Xu & Changsheng Yang

  2. Department of Electrical and Electronic Engineering, The University of Hong Kong, Hongkong, China

    Can Li

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  1. Zhongmin Yang
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  3. Shanhui Xu
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Yang, Z., Li, C., Xu, S., Yang, C. (2019). Single-Frequency Active Fiber Lasers. In: Single-Frequency Fiber Lasers. Optical and Fiber Communications Reports, vol 8. Springer, Singapore. https://doi.org/10.1007/978-981-13-6080-0_3

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