Frequency down-conversion of a dual-wavelength fiber laser

Shang, Yu; Wang, Peng; Li, Xiao; Shen, Meili; Xu, Xiaojun

doi:10.1016/j.ijleo.2016.09.068

Cited by 9 publications

(5 citation statements)

References 22 publications

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“…The idler power dependence on the pump power when the OPO was simultaneously pumped by the 1018 nm and 1064 nm fiber laser and shown in figure 6. The figure reveals that under the maximum pump power of 55.5 W, the total idler power reached 2.6 W. The corre sponding pump-to-idler conversion efficiency was about 4.7%, relatively smaller than the previous reports [21,22,25]. It is expected to be enhanced with the optimization of the cavity structure and coating of cavity mirrors.…”

Section: Experiments Setup and Resultsmentioning

confidence: 80%

“…Compared with other kinds of pump sources, fiber lasers have the potential to achieve multi-wavelength output without complicate structure. In the previous work, we have obtained dual-and triple-wavelength mid-infrared output based on simultaneous intracavity optical parametric oscillation and difference frequency generation (DFG) pumped by a multiwavelength fiber source, which was realized by combining several fiber lasers in series [21,22]. However, there were two big limitations, one of which was that the power of each individual fiber laser could not be controlled independently and the other being that one of the nonlinear processes was DFG, leading to the low pump-to-idler conversion efficiency due to the existence of phase mismatch.…”

Section: Introductionmentioning

confidence: 99%

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Fiber-laser-pumped, continuous-wave, dual-wavelength, mid-infrared optical parametric oscillator

Wang

Cheng

et al. 2018

Laser Phys.

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We demonstrated a new kind of dual-wavelength mid-infrared optical parametric oscillator (OPO), synchronously pumped by two independent fiber lasers, which were combined in parallel by a wavelength division multiplexer and had central wavelengths located at 1018 nm and 1064 nm separately. With reasonable cavity design and under the maximum pump power of 55.5 W, two idler emissions fixed at 3200 nm and 3704 nm were obtained and the total idler output power reached 2.6 W, indicating a 4.7% pump-to-idler conversion efficiency. Just one signal beam was observed in the experiment, which was around 1493 nm. It was analyzed that two OPO processes existed in the resonant cavity and shared the same signal beam, both which simultaneously met the phase-matching conditions.

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Section: Experiments Setup and Resultsmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Fiber-laser-pumped, continuous-wave, dual-wavelength, mid-infrared optical parametric oscillator

Wang

Cheng

et al. 2018

Laser Phys.

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“…Our research group has made some achievements in fiber-laser-pumped dual-wavelength mid-infrared OPOs. In 2016, our group achieved a dual-wavelength mid-infrared OPO which was pumped by a 1064&1080 nm dual-wavelength fiber laser [11]. In that experiment, parametric oscillation and difference frequency generation (DFG) simultaneously occurred and 3125&3323 nm dual-wavelength mid-infrared emission was observed.…”

Section: Introductionmentioning

confidence: 99%

A High Efficient Dual-Wavelength Mid-Infrared Optical Parametric Oscillator Pumped by the Raman Fiber Oscillator

et al. 2020

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In this paper, a novel high efficient dual-wavelength mid-infrared optical parametric oscillator (OPO) was demonstrated, which was pumped by a dual-wavelength Raman fiber oscillator for the first time. The adoption of oscillator structure reduced the waste of power, increased Raman pump power and promoted its frequency conversion. The dualwavelength pump source was fixed at 1070 nm and 1120 nm and the Raman conversion efficiency was greatly enhanced from 26.7% to 72.1%. The high Raman efficiency and low Raman threshold enabled the Raman laser to build optical parametric oscillation easily and the pump-to-idler conversion efficiency of Raman laser improved greatly from 4.2% to 13.3%. The generated dual-wavelength mid-infrared laser was fixed at 3272 nm and 3663 nm, with a maximum power of 6.87 W, indicating a 13.9% pump-to-idler conversion efficiency. The highest mid-infrared output power generated by optical parametric oscillation of Raman laser was also achieved, which is almost ten times than before.

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“…Adopting dual-or multi-wavelength fiber lasers as pump sources was another effective method to realize DW mid-infrared output [16], [17]. Recently Yaping Shang and Peng Wang reported DW and triple-wavelength mid-infrared OPOs, pumped by DW fiber sources which was obtained by combining two fiber lasers in cascade [16], [17]. Besides, Peng Wang et al demonstrated a wide tunable, DW, continuous-wave (CW) OPO by keeping one pump wavelength fixed and enabling the other tunable [18].…”

Section: Introductionmentioning

confidence: 99%

Low Threshold, Dual-Wavelength, Mid-Infrared Optical Parametric Oscillator

Cheng

Wang

et al. 2019

IEEE Photonics J.

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In this letter, we demonstrated a dual-wavelength (DW) mid-infrared optical parametric oscillator (OPO) that was pumped by two independent fiber lasers fixed at 1018 nm and 1080 nm, and realized phase-matched signal beam coupling by tuning grating period of PPLN. Based on signal beam coupling, two interesting phenomena were observed for the first time. One is that the OPO threshold for 1018 nm and 1080 nm pump beams could be drastically lowered from 15.4 W to 266 mW and from 13.5 W to 1.38 W separately. The other is that the total idler power obtained when the OPO was simultaneously pumped by two fiber lasers was higher than sum of idler power obtained when the OPO was independently pumped by two fiber lasers, revealing obvious parametric gain enhancement. It also indicated that the two independent OPO processes became coherent when two signal beams were coupled. The results exhibit great potential in practical applications such as frequency down-conversion of some special near-infrared laser sources such as pulsed single-frequency sources, spectrum high-speed swept sources, and ultra-short pulse sources with low duty cycle.

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Frequency down-conversion of a dual-wavelength fiber laser

Cited by 9 publications

References 22 publications

Fiber-laser-pumped, continuous-wave, dual-wavelength, mid-infrared optical parametric oscillator

Fiber-laser-pumped, continuous-wave, dual-wavelength, mid-infrared optical parametric oscillator

A High Efficient Dual-Wavelength Mid-Infrared Optical Parametric Oscillator Pumped by the Raman Fiber Oscillator

Low Threshold, Dual-Wavelength, Mid-Infrared Optical Parametric Oscillator

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