| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Low-Threshold Broadband Spectrum Generation by Amplification of Cascaded Stimulated Raman Scattering in an Ytterbium-Doped Fiber Amplifier |
| LEI Cheng-Min, SONG Rui**, JIN Ai-Jun, HOU Jing |
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073
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| Cite this article: |
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LEI Cheng-Min, SONG Rui, JIN Ai-Jun et al 2015 Chin. Phys. Lett. 32 074202 |
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Abstract We present an experimental study on low-threshold broadband spectrum generation mainly due to the amplification of the cascaded stimulated Raman scattering (SRS) effect in a four-stage fiber master oscillator power amplifier system. The cascaded SRS is achieved by using a long passive fiber pumped by a pulsed fiber laser centered at wavelength 1064 nm. The amplified spontaneous emission during the amplification process is efficiently suppressed by cutting the length of the passive fiber and by using a double-clad ytterbium-doped fiber amplifier. The generated broadband spectrum spans from 960 nm to 1700 nm with maximum average output 13.6 W and average spectral power density approximately 17.7 mW/nm.
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Received: 23 March 2015
Published: 30 July 2015
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| PACS: |
42.65.Dr
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(Stimulated Raman scattering; CARS)
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