Carbon Nanotube-Poly(vinylalcohol) Nanocomposite Film Devices: Applications for Femtosecond Fiber Laser Mode Lockers and Optical Amplifier Noise Suppressors
Carbon Nanotube-Poly(vinylalcohol) Nanocomposite Film Devices: Applications for Femtosecond Fiber Laser Mode Lockers and Optical Amplifier Noise Suppressors
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DOI：
10.1143/jjap.44.1621
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发表时间：
2005-04
影响因子：
1.5
通讯作者：
Y. Sakakibara;A. Rozhin;H. Kataura;Y. Achiba;M. Tokumoto
中科院分区：
文献类型：
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作者：
Y. Sakakibara;A. Rozhin;H. Kataura;Y. Achiba;M. Tokumoto
我们制作了单壁碳纳米管（SWNT）/聚乙烯醇（PVA）纳米复合材料的独立膜，并研究了它们在近红外光通信波长的SWNT的饱和吸收可以利用的设备中的应用。在被动锁模光纤激光器中，我们将30 μ m厚的SWNT/PVA薄膜集成到光纤连接适配器中，薄膜夹在一对光纤套管中。采用单壁碳纳米管/聚乙烯醇（PVA）可饱和吸收体的环形光纤激光器很容易实现锁模短脉冲模式，脉冲宽度约为500 fs。证实了器械性能可重现且稳定。在研究光放大器的噪声抑制时，半导体放大自发辐射（ASE）源和370 fs激光脉冲的混合光通过100 μ m厚的SWNT/PVA膜。飞秒脉冲光的传输损耗小于ASE光的传输损耗。这证明了SWNT/PVA薄膜具有抑制ASE噪声的能力。
We fabricated single-wall carbon nanotube (SWNT)/poly(vinylalcohol) (PVA) nanocomposite freestanding films and examined their application in devices in which the saturable absorption of SWNTs at near-infrared optical telecommunication wavelengths can be utilized. In a passively mode-locked fiber laser, we integrated a 30-µm-thick SWNT/PVA film into a fiber connection adaptor with the film sandwiched by a pair of fiber ferrules. A ring fiber laser with a SWNT/PVA saturable absorber was operated very easily in the mode-locked short-pulse mode with a pulse width of about 500 fs. Reproducible stable device performance was confirmed. In examining noise suppression for optical amplifiers, mixed light of semiconductor amplified spontaneous emission (ASE) source and 370 fs laser pulses was passed through a 100-µm-thick SWNT/PVA film. The transmission loss of the femtosecond pulse light was smaller than that of the ASE light. This proved that the SWNT/PVA film has the ability to suppress ASE noise.