scholarly journals Highly Efficient Nanosecond 1.7 μm Fiber Gas Raman Laser by H2-Filled Hollow-Core Photonic Crystal Fibers

Crystals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 32
Author(s):  
Hao Li ◽  
Wenxi Pei ◽  
Wei Huang ◽  
Meng Wang ◽  
Zefeng Wang
Keyword(s):  
Photonic Crystal ◽  
Slope Efficiency ◽  
Fiber Lasers ◽  
Photonic Crystal Fibers ◽  
Pulse Repetition Frequency ◽  
Hollow Core ◽  
Wavelength Tunable ◽  
Highly Efficient ◽  
Pulsed Fiber Lasers ◽  
Crystal Fibers

We report here a high-power, highly efficient, wavelength-tunable nanosecond pulsed 1.7 μm fiber laser based on hydrogen-filled hollow-core photonic crystal fibers (HC-PCFs) by rotational stimulated Raman scattering. When a 9-meter-long HC-PCF filled with 30 bar hydrogen is pumped by a homemade tunable 1.5 μm pulsed fiber amplifier, the maximum average Stokes power of 3.3 W at 1705 nm is obtained with a slope efficiency of 84%, and the slope efficiency achieves the highest recorded value for 1.7 μm pulsed fiber lasers. When the pump pulse repetition frequency is 1.3 MHz with a pulse width of approximately 15 ns, the average output power is higher than 3 W over the whole wavelength tunable range from 1693 nm to 1705 nm, and the slope efficiency is higher than 80%. A steady-state theoretical model is used to achieve the maximum Stokes power in hydrogen-filled HC-PCFs, and the simulation results accord well with the experiments. This work presents a new opportunity for highly efficient tunable pulsed fiber lasers at the 1.7 μm band.

scholarly journals Highly efficient fluorescence sensing with hollow core photonic crystal fibers

2007 ◽  
Vol 15 (20) ◽  
pp. 12783 ◽  
Author(s):  
Stephan Smolka ◽  
Michael Barth ◽  
Oliver Benson
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Hollow Core ◽  
Fluorescence Sensing ◽  
Highly Efficient ◽  
Crystal Fibers

scholarly journals Characteristic Analysis and Structural Design of Hollow-Core Photonic Crystal Fibers with Band Gap Cladding Structures

Sensors ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 284
Author(s):  
Bowei Wan ◽  
Lianqing Zhu ◽  
Xin Ma ◽  
Tianshu Li ◽  
Jian Zhang
Keyword(s):  
Photonic Crystal ◽  
Band Gap ◽  
Photonic Crystal Fibers ◽  
Relative Sensitivity ◽  
Confinement Loss ◽  
Hollow Core ◽  
Characteristic Analysis ◽  
Element Analysis ◽  
The Core ◽  
Crystal Fibers

Due to their flexible structure and excellent optical characteristics hollow-core photonic crystal fibers (HC-PCFs) are used in many fields, such as active optical devices, communications, and optical fiber sensing. In this paper, to analyze the characteristics of HC-PCFs, we carried out finite element analysis and analyzed the design for the band gap cladding structure of HC-PCFs. First, the characteristics of HC19-1550 and HC-1550-02 in the C-band were simulated. Subsequently, the structural optimization of the seven-cell HC-1550-02 and variations in characteristics of the optimized HC-1550-02 in the wavelength range 1250–1850 nm were investigated. The simulation results revealed that the optimal number of cladding layers is eight, the optimal core radius is 1.8 times the spacing of adjacent air holes, and the optimal-relative thickness of the core quartz-ring is 2.0. In addition, the low confinement loss bandwidth of the optimized structure is 225 nm. Under the transmission bandwidth of the optimized structure, the core optical power is above 98%, the confinement loss is below 9.0 × 10−3 dB/m, the variation range of the effective mode field area does not exceed 10 μm2, and the relative sensitivity is above 0.9570. The designed sensor exhibits an ultra-high relative sensitivity and almost zero confinement loss, making it highly suitable for high-sensitivity gas or liquid sensing.

scholarly journals 7-cell core hollow-core photonic crystal fibers with low loss in the spectral region around 2 μm

2009 ◽  
Vol 17 (26) ◽  
pp. 23468 ◽  
Author(s):  
J. K. Lyngsø ◽  
B. J. Mangan ◽  
C. Jakobsen ◽  
P. J. Roberts
Keyword(s):  
Photonic Crystal ◽  
Spectral Region ◽  
Photonic Crystal Fibers ◽  
Hollow Core ◽  
Low Loss ◽  
Crystal Fibers

scholarly journals Optical frequency standard using acetylene-filled hollow-core photonic crystal fibers

2015 ◽  
Vol 23 (9) ◽  
pp. 11227 ◽  
Author(s):  
Marco Triches ◽  
Mattia Michieletto ◽  
Jan Hald ◽  
Jens K. Lyngsø ◽  
Jesper Lægsgaard ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Frequency Standard ◽  
Optical Frequency ◽  
Hollow Core ◽  
Optical Frequency Standard ◽  
Crystal Fibers

scholarly journals Efficient self-compression of ultrashort near-UV pulses in air-filled hollow-core photonic crystal fibers

2021 ◽  
Vol 29 (9) ◽  
pp. 13787
Author(s):  
Jie Luan ◽  
Philip St.J. Russell ◽  
David Novoa
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Hollow Core ◽  
Crystal Fibers
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