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Compact all-fiber gas Raman light source based on hydrogen-filled hollow-core photonic crystal fiber pumped with single-mode Q-switched fiber laser
Affiliation:1. State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute, Hefei, Anhui 230037, China;2. Division of Metrology in Optics and Laser, National Institute of Metrology, Beijing 100013, China;1. Shenzhen Key Laboratory of Laser Engineering, College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, China;2. College of Information Engineering, Shenzhen University, Shenzhen 518060, China;1. Institute of Photonic Technology IPHT, Albert-Einstein-Str. 9, 07745 Jena, Germany;2. Fraunhofer Institute for Laser Technology ILT, Steinbachstr. 15, 52074 Aachen, Germany;1. Institute of Electronics, Chinese Academy of Sciences, No. 19, North Fourth Ring West Road, Haidian District, Beijing 100190, China;2. University of Chinese Academy of Sciences, No. 19, Yuquan Road, Shijingshan District, Beijing 100049, China;3. Key Laboratory of Space Object Measurement, Beijing Institute of Tracking & Telecommunications Technology, Beijing 100094, China;1. Laboratory of Theoretical Spectroscopy, V.E. Zuev Institute of Atmospheric Optics, SB, Russian Academy of Science, 1, Akademician Zuev Square, 634021 Tomsk, Russia;2. Climate and Environmental Physics Laboratory, Ural Federal University, 19, Mira Av., 620002 Yekaterinburg, Russia;3. Univ. Grenoble Alpes, LIPhy, F-38000 Grenoble, France;4. CNRS, LIPhy, F-38000 Grenoble, France;5. Tomsk State University, Laboratory of Quantum Mechanics of Molecules and Radiative Processes, 36, Lenin Avenue, 634050 Tomsk, Russia
Abstract:We report a compact all-fiber gas Raman light source based on hydrogen-filled HC-PCF gas cell with a SM Q-switched fiber laser as the Raman pump source. Theoretical model of the hydrogen SRS based on HC-PCF pumped with Q-switched fiber laser is also analyzed. Simulated results show that the Stokes pulse is much narrower than the pump pulse, and both the Stokes pulse duration and conversion efficiency are increased with the pump pulse energy of the same duration pump pulses. The experimental results are in agreement with the theoretical results in change trend. For the 120 ns pump pulses with the repetition rate of 5 kHz, the threshold pump energy and conversion efficiency at the threshold are 1.146 μJ and 2.69%.
Keywords:Stimulated Raman scattering  Hollow-core photonic crystal fiber  Single-mode  Fiber laser  Q-switched
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