Widely tunable continuous wave mid-IR DFG source based on fiber lasers and amplifiers

Mao, Qinghe; Jiang, Jian; Li, X.Q.; Chang, Jing; Liu, W.Q.

doi:10.1002/lapl.200910048

Cited by 27 publications

(11 citation statements)

References 15 publications

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“…The main advantages of frequency conversionbased mid-IR laser sources are wide, non-complex tuning, narrow line width and in most cases, a modular structure. The designs most commonly found in the literature use fiber based lasers [7,8] or solid state lasers [9]. Fiber based DFG mid-IR sources have a simplified design with a minimal number of bulk optical elements used in the setup.…”

Section: Introductionmentioning

confidence: 99%

Widely tunable, all-polarization maintaining, monolithic mid-infrared radiation source based on differential frequency generation in PPLN crystal

Krzempek¹,

Soboń²,

Sotor³

et al. 2014

Laser Phys. Lett.

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We present a difference frequency generation based (DFG) mid-infrared (mid-IR) laser source using an all-polarization-maintaining-fiber (all-PM) amplifier capable of simultaneous amplification of 1064 nm and 1550 nm signals. The amplifier incorporates a single piece of a standard erbium:ytterbium (Er:Yb) co-doped double-clad (DC) active fiber and a limited number of off-the-shelf fiber-based components. Excited by a single 9 W multimode pump, the amplifier delivered over 12.1 dB and 17.8 dB gain at 1 µm and 1.55 µm, respectively. Due to an all-PM configuration, the amplifier was exceptionally convenient for DFG of mid-IR radiation in periodically polled lithium niobate (PPLN) crystal, yielding an output power of ~200 µW in a wide spectral range spanning from 3300 to 3470 nm.

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Section: Introductionmentioning

confidence: 99%

Widely tunable, all-polarization maintaining, monolithic mid-infrared radiation source based on differential frequency generation in PPLN crystal

Krzempek¹,

Soboń²,

Sotor³

et al. 2014

Laser Phys. Lett.

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show abstract

“…Høgstedt et al demonstrated a tunable CW DFG source with 3.06-mW maximum power at 3.03 μm [3]. Their 500 nm tuning range resulted from shifts between four different grating periods together with adjustments of crystal [16]. This wavelength range is attractive for the detection of several species through the H-C stretch vibration and fortuitously, can be reached by DFG between 1 -1.1 μm and 1.5 -1.6 μm, where excellent fiber-based sources have been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Continuous-Wave 3.1–3.6 μm Difference-Frequency Generation of Dual Wavelength-Tunable Fiber Sources in PPMgLN-Based Rapid-Tuning Design

Zhao

Jia

Feng

et al. 2018

IEEE J. Select. Topics Quantum Electron.

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We report on a single-frequency continuous wave (CW) difference-frequency generation (DFG) source based on single-frequency wavelength-tunable polarization-maintaining ytterbium-and erbium-doped fiber master oscillator-power amplifiers (MOPAs), acting as the pump and signal source, respectively, and a 40-mm long periodically poled MgO-doped LiNbO 3 (PPMgLN) crystal. Owing to the dual wavelength-tuning of the MOPAs, the generated idler light reaches a wavelength-tuning range of close to 500 nm, from ~3117.2 to ~3598.8 nm, only by tuning the launched pump and signal wavelengths from 1040 nm to 1084.6 nm and from 1545.2 nm to 1561.4 nm, respectively, without any change of temperature or grating period of the PPMgLN. Compared to temperature-based idler-wavelength-tuning, this method is potentially faster in speed. The maximum idler power exceeds 60 mW, which is the highest reported power for a wavelength-tunable single-frequency CW DFG source. A rapidly wideband-tunable DFG source with tens of milliwatts of output power in a narrow line can be a practical tool for mid-infrared molecular spectroscopy, detection, and sensing at high measurement rates.

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“…Erbium-doped fiber lasers (EDFLs) and other doped fiber lasers can be used for gas detection, since they are able to operate over a large wavelength range [15,16], including absorption lines of several important gases, e.g., C 2 H 2 , CO, CO 2 , NO, OH, HCN, and HI [17]. The recently reported Bi-doped fiber laser and optical amplifier [18] have a wide spectral region from 1150 to 1550 nm, covering more gases of interest.…”

Section: Introductionmentioning

confidence: 99%

Gas-self-filter-based erbium-doped fiber loop laser for gas detection

et al. 2014

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An erbium-doped fiber (EDF) loop laser, based on a gas-self-filter (GSF), is developed with single or multiple wavelength emission. The GSF is a type of Mach-Zehnder interferometer with a gas cell in one arm. By matching the destructive wavelength of the interferometer with the gas absorption line, the self-filtering function is achieved. A GSF-based multi-wavelength laser with a side-mode suppression ratio of ~50 dB is performed. As an example, C₂H₂ gas is detected using a single-wavelength GSF-based laser with correlation spectroscopy, and a good linearity of the measurement is obtained. The present laser has the potential advantage for multiple gas detection, e.g., being free of wavelength calibration.

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Widely tunable continuous wave mid-IR DFG source based on fiber lasers and amplifiers

Cited by 27 publications

References 15 publications

Widely tunable, all-polarization maintaining, monolithic mid-infrared radiation source based on differential frequency generation in PPLN crystal

Widely tunable, all-polarization maintaining, monolithic mid-infrared radiation source based on differential frequency generation in PPLN crystal

Continuous-Wave 3.1–3.6 μm Difference-Frequency Generation of Dual Wavelength-Tunable Fiber Sources in PPMgLN-Based Rapid-Tuning Design

Gas-self-filter-based erbium-doped fiber loop laser for gas detection

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