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Generation of few-cycle laser pulses by coherent synthesis based on a femtosecond yb-doped fiber laser amplification system

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Chinese Optics Letters 2019年第4期17卷 66-70页

作者： Aichen Ge Bowen Liu Wei Chen Haochen Tian Youjian Song Lu Chai Mingiie Hu Ultrafast Laser Laboratory School of Precision Instrument and Optoelectronics Engineering Key Laboratory of Optoelectronic Information Technology (Ministry of Education) Tianjin University

We demonstrate a coherent synthesis system based on femtosecond yb-doped fiber laser technology. The output pulse of the amplification system is divided into two replicas and seeded into photonic crystal fibers of two parallel branches for nonlinear pulse compression. Because of the different nonlinear dynamics in the photonic crystal fibers, the compressed pulses show different spectra, which can be spliced to form a broad coherent spectrum. The integrated timing jitter between the pulses of two branches is less than one tenth of an optical *** coherently synthesizing pulses from these two branches, 8 fs few-cycle pulses are produced.

关键词： demonstrate a coherent femtosecond yb-doped coherently synthesizing

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Hybrid femtosecond laser system based on a yb:KGW regenerative amplifier for N_P polarization

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Chinese Optics Letters 2019年第4期17卷 71-74页

作者： Dongyu Yan Bowen Liu Yuxi Chu Huanyu Song Lu Chai Minglie Hu Chingyue Wang Ultrafast Laser Laboratory Key Laboratory of Opto-electronic Information Science and Technology of Ministry of Education School of Precision Instruments and Opto-electronics Engineering Tianjin University

We report a hybrid femtosecond laser system based on a femtosecond yb-doped fiber laser and a yb-doped potassium gadolinium tungstate(yb:KGW) regenerative amplifier. To match the central wavelength of the seed source, a yb:KGW crystal is used in the regenerative amplifier for N_p polarization. We study and optimize the dynamics of nonlinear amplification to alleviate the gain narrowing effect. With optimization, the system can output 270 fs pulses with 21 μJ pulse energy at a 60 kHz repetition rate.

关键词： hybrid femtosecond femtosecond yb-doped 60 kHz repetition

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Theoretical and Numerical Study of Stress and Thermo-Optic in Photonic Crystal Fiber Laser in Different Pump Schemes

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Open Journal of Metal 2014年第4期4卷 120-130页

作者： M. Abouricha A. Boulezhar M. El Mouden M. Kriraa Laboratory of Theoretical and Applied Physics Faculty of Sciences-Ain Chok Hassan II Casablanca University Casablanca Morocco Engineering Sciences Laboratory for Energy (LabSIPE) National School of Applied Sciences El Jadida Morocco

In this paper, we present a study of thermal, average power scaling, change in index of refraction and stress in photonic crystal fiber lasers with different pump schemes: forward pump scheme, backward pump scheme, forward pump scheme with reflection of 98%, backward pump scheme with reflection of 98% and bi-directional pump scheme. We show that management of thermal effects in fiber lasers will determine the efficiency and success of scaling-up efforts. In addition, we show that the most suitable scheme is the bi-directional.

关键词： Pump Schemes PCF Lasers Birefringence in Fiber Lasers Diode-Pumped Fiber Lasers Fiber Lasers Scaling of Fiber Lasers yb-doped Fiber Lasers Thermal Effects in Fiber Lasers

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Comparative Study of the Birefringence in Photonic Crystal Fiber Lasers

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Optics and Photonics Journal 2015年第11期5卷 320-325页

作者： N. Rouchdi M. Abouricha A. Boulezhar M. Kriraa Laboratory of theoretical and Applied Physics Faculty of Sciences-Ain Chok Hassan II Casablanca University Casablanca Morocco Thermal Group LPMMAT Department of Physics Faculty of Sciences-Ain Chok Hassan II Casablanca University Casablanca Morocco

In this paper, we study the birefringence in photonic crystal fiber lasers PCFs and in conventional fiber lasers in the bi-directional pump scheme in the linear cavity laser. We show that the value of birefringence in... 详细信息

关键词： Pump Schemes PCF Lasers Fiber Lasers yb-doped Fiber Lasers Thermal Effects in Fiber Lasers

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