Article
Optics
Biplob Nandy, S. Chaitanya Kumar, M. Ebrahim-Zadeh
Summary: This study demonstrates the generation of high-repetition-rate picosecond pulses in the 1.3-1.5 μm spectral range using an idler-resonant optical parametric oscillator based on MgO-doped periodically-poled LiNbO3. By optimizing the spatial quality of the idler beam and employing a second MgO:PPLN crystal with a fanout grating structure, spectral coverage across 1272-1515 nm and stable output power have been achieved.
Article
Optics
Yang He, Yanhui Ji, Haohua Wan, Deyang Yu, Kuo Zhang, Qikun Pan, Junjie Sun, Yi Chen, Fei Chen
Summary: The study focused on the performance of a MgO:PPLN-based optical parametric oscillator pumped by an all-fiber Yb-doped fiber laser, investigating factors such as pump repetition rate, pulse width, and waist diameter. Through optimization, a maximum mid-infrared power output of 10.82 W with a conversion efficiency of 13.68% was achieved, resulting in a total output power of 35.4 W.
OPTICS AND LASER TECHNOLOGY
(2022)
Review
Chemistry, Analytical
Alena Zavadilova, Vaclav Kubecek, David Vyhlidal
Summary: The research focuses on the development of laser systems for intracavity phase interferometry. These systems use an intracavity synchronously pumped optical parametric oscillator to generate two trains of picosecond pulses within a single cavity. The beat note frequency between the pulses can be measured, and the phase difference between them can be precisely determined.
Article
Chemistry, Multidisciplinary
Yixin He, Chao Yan, Kai Chen, Degang Xu, Jining Li, Kai Zhong, Yuye Wang, Rui Yao, Jiyong Yao, Jianquan Yao
Summary: This study demonstrated a tunable mid-infrared optical parametric oscillator based on BGSe crystal, using a high energy side-pumped Nd:YAG laser as the pump source, achieving a maximum average power of 250 mW and maximum pulse energy of 1.28 mJ at 4.06 μm. Tunable mid-infrared output from 3.42-4.73 μm was obtained, and the effects of repetition rate and cavity length on the system performance were studied.
APPLIED SCIENCES-BASEL
(2022)
Article
Physics, Applied
Gaoyu Dai, Chee Seong Goh, Yasuyuki Ozeki
Summary: We have demonstrated a polarization-maintaining mode-locked Yb fiber laser that generates low-noise picosecond pulses with wavelength tunability. The relative intensity noise is very low within the tunable range.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2021)
Article
Optics
Kefeng Chen, Lina Gan, Yingge Tao, Weilin Shao, Wei Yu, Haowei Lin, Zhiping Cai, Huihui Cheng
Summary: We presented an all-polarization-maintaining (PM) passively mode-locked Yb3+-doped fiber laser (YDFL) with a fundamental repetition rate of 1.3 GHz. By rotating the fast axis of the fiber optical pigtail of a dispersive dielectric mirror, different shapes of optical spectra for a linearly polarized soliton were observed. The oscillator achieved various laser performance, including a threshold pump power for continuous wave laser oscillation of 3.1 mW, an optical-to-optical efficiency for modelocking of 29%, and an integrated relative intensity noise of 0.08%. To our knowledge, this is the first report of >1 GHz ultrafast all-fiber YDFL with PM architecture.
CHINESE OPTICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Wei Sun, Jin Wen, Weijun Qin, Chenyao He, Keyu Xiong, Bozhi Liang
Summary: A picosecond synchronously pumped terahertz optical parametric oscillator based on silicon membrane waveguide (Si-based WTPO) is proposed and numerically simulated. By designing the structure parameters of the silicon membrane waveguide, a broadband terahertz frequency range is obtained. Numerical analysis shows that the parametric oscillation within the resonant cavity can significantly enhance the output terahertz wave power. High bandwidth and efficiency terahertz wave can be obtained, but high pump power may lead to reverse conversion.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
(2023)
Article
Instruments & Instrumentation
Ze Lv, Yu Shen, Ya Wen, Er-Peng Wang, Zhi-Min Wang, Wen-Long Li, Yong Bo, Qin-Jun Peng
Summary: A high-power widely tunable nanosecond mid-infrared optical parametric oscillator using a ZnGeP2 crystal has been demonstrated. The optimized system parameters achieved high power output and a wide tuning range.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Optics
Freysz Valerian, Freysz Eric
Summary: We report on a femtosecond-pulsed optical parametric oscillator (OPO) that is pumped by a large-mode-area, ytterbium-doped, rod-type fiber laser. By adjusting the pulse polarization inside the laser cavity, the OPO can deliver tunable femtosecond signal pulses at different repetition rates.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Yi-Huai Zhu, Peng-Sheng Shen, Shu-Kai Zhen, Lin-Peng Yu, Xing Luo, Jin-Zhang Wang, Pei-Guang Yan, Fan-Long Dong, Wen-Jun Liu, Qi-Tao Lue, Chun-Yu Guo, Shuang-Chen Ruan
Summary: This work proposes and experimentally demonstrates for the first time a synchronously pumped fiber Raman laser (SPFRL) operating at 1.7 μm. The Stokes pulses are generated through third harmonic pumping by a 1563 nm picosecond pulsed fiber laser, with high average power, short pulse duration, and high repetition frequency. This work provides a pathway to a power scalable ultrafast laser at 1.7 μm via a compact and elegant all-fiber solution.
Article
Optics
Baptiste Bruneteau, Basile Faure, Jerome Debray, Gregoire Souhaite, Patricia Segonds, Hideki Ishizuki, Takunori Taira, Benoit Boulanger
Summary: We present the implementation of a singly resonant optical parametric oscillator using a sub-nanosecond microchip laser pumped 5%MgO:PPLN partial cylinder. The oscillator emits a continuous tunable output from 1410nm to 4330nm by rotating the cylinder. The emitted energy reaches several microjoules with a beam quality factor M-2 below 3.
Article
Optics
Xingbin Wei, Xianlin Ye, Xiafei Xu, Huaijing Ren, Jie Liu, Dehui Sun, Hong Liu, Lei Zhang, Weimin Wang
Summary: A diode-pumped self-optical parametric oscillator (SOPO) was presented, which achieved simultaneous laser oscillation and frequency down conversion in a single Nd:MgO:PPLN crystal. The thermal problem in this multi-functional crystal was studied by optimizing the diode laser wavelength, pump beam size, and compact cavity design. The SOPO output power was 1.2 W for both the 3.85 μm idler and 1.51 μm signal lasers at an absorbed pump power of 15.4 W, and wavelength tuning of the idler laser in the mid-infrared region was demonstrated.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Muhammad Ghawas, Valerian Freysz, Lukas Mueller, Sebastien Cassagnere, Eric Freysz
Summary: An all-normal dispersion ytterbium rod-type fiber laser oscillator has been designed, which delivers continuously tunable picosecond pulses. The central wavelength and pulse duration of the pulses can be adjusted by manipulating the position and width of a spectral bandwidth filter.
Article
Physics, Applied
Dana Jashaner, Yuxia Zhou, Taximaiti Yusufu
Summary: We present a widely-tunable mid-infrared picosecond optical vortex laser source, utilizing a synchronized-pumped optical parametric oscillator optimized for emission up to 5 μm in the mid-infrared range. The vortex output with a continuously-tunable wavelength range of 2.6-5 μm can be achieved by translating the MgO:PPLN crystal. At the maximum pump power of 15 W, the measured maximum idler output powers were 3.7 W, 1.7 W, and 0.165 W at wavelengths of 2.6 μm, 3.8 μm, and 5 μm, respectively. The corresponding photon conversion efficiencies were estimated to be 60% at 2.6 μm, 40% at 3.8 μm, and 5.2% at 5 μm.
APPLIED PHYSICS EXPRESS
(2022)
Article
Optics
Jingcheng Shang, Shengzhi Zhao, Yizhou Liu, Kejian Yang, Chun Wang, Yuefeng Zhao, Yuzhi Song, Ping Hu, Jiajia Mao, Tao Li, Tianli Feng
Summary: The gigahertz-pulse repetition rate, 2-μm harmonic mode-locking Tm-doped fiber oscillator is achieved using the nonlinear polarization rotation method. The oscillator operates in either < 2000-nm or > 2000-nm region and delivers high output powers with short pulse durations at different wavelengths.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
S. Parsa, S. Chaitanya Kumar, Biplob Nandy, M. Ebrahim-Zadeh
Article
Optics
Varun Sharma, G. K. Samanta, S. Chaitanya Kumar, R. P. Singh, M. Ebrahim-Zadeh
Article
Optics
Callum F. O'Donnell, S. Chaitanya Kumar, T. Paoletta, M. Ebrahim-Zadeh
Article
Optics
Varun Sharma, S. Chaitanya Kumar, G. K. Samanta, M. Ebrahim-Zadeh
Article
Optics
B. Nandy, S. Chaitanya Kumar, M. Ebrahim-Zadeh
Article
Optics
Sukeert, S. Chaitanya Kumar, M. Ebrahim-Zadeh
Article
Optics
Biplob Nandy, S. Chaitanya Kumar, M. Ebrahim-Zadeh
Article
Optics
S. Chaitanya Kumar, B. Nandy, M. Ebrahim-Zadeh
Article
Optics
S. Chaitanya Kumar, Sukeert, M. Ebrahim-Zadeh
Summary: This study successfully achieved high-power continuous-wave mid-infrared difference-frequency generation in MgO:PPLN, with an output power of up to 3.84W and a conversion efficiency of 0.57%/W. The DFG beam exhibited excellent stability and spatial quality in TEM00 mode.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Sukeert, S. Chaitanya Kumar, M. Ebrahim-Zadeh
Summary: The article reports a high-power source of continuous-wave mid-IR radiation based on difference-frequency-generation of Yb-fiber laser and Tm-fiber laser, achieving a power conversion efficiency of about 0.47%/W. The generated output represents the highest cw power obtained from any single-pass nonlinear frequency conversion source in the mid-IR, with excellent passive power stability and spectral stability.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Optics
Junxiong Wei, S. Chaitanya Kumar, M. Ebrahim-Zadeh
Summary: A novel approach for injection seeding of pulsed optical parametric oscillators (OPOs) is presented, which provides spectral control over the tuning range and reduces bandwidth to singlemode operation. By utilizing a hybrid design with continuous-wave (cw) OPO injection seeding, signal pulses with narrow linewidth are achieved. The impact of cw injection seeding on pulsed OPO operation is confirmed through various improvements in performance.
Article
Optics
Varun Sharma, S. Chaitanya Kumar, G. K. Samanta, M. Ebrahim-Zadeh
Summary: The study presents a high-average-power picosecond optical vortex source tunable in the near-infrared with stable power performance and unique intensity distribution characteristics.
Article
Optics
Varun Sharma, S. Chaitanya Kumar, G. K. Samanta, M. Ebrahim-Zadeh
Summary: We report the generation of tunable high-order optical vortices in the mid-infrared using a picosecond optical parametric oscillator. By transferring the pump optical vortices to the non-resonant idler beam, high-order idler vortices are generated in the mid-IR. This study demonstrates the first OPO pumped by a vortex beam of order as high as 5 and generating idler vortices of high order in the mid-IR.
Article
Optics
Biplob Nandy, S. Chaitanya Kumar, M. Ebrahim-Zadeh
Summary: This study demonstrates the generation of high-repetition-rate picosecond pulses in the 1.3-1.5 μm spectral range using an idler-resonant optical parametric oscillator based on MgO-doped periodically-poled LiNbO3. By optimizing the spatial quality of the idler beam and employing a second MgO:PPLN crystal with a fanout grating structure, spectral coverage across 1272-1515 nm and stable output power have been achieved.
Article
Engineering, Electrical & Electronic
Alfredo Daniel Sanchez, Suddapalli Chaitanya Kumar, Majid Ebrahim-Zadeh
Summary: In this report, the generation of stable and periodic picosecond pulses with a duration of <5 ps was successfully achieved using a degenerate OPO with detuned cavity, an electro-optic modulator, and a spectral filter.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)