Broadband and Triple-Wavelength Continuous Wave Orange Laser by Single-Pass Sum-Frequency Generation in Step-Chirped MgO:PPLN

Li, Guangwei; Choge, Dismas K.; Chen, Huaixi; Yan, Xu; Guo, Lei; Liang, Wanguo

doi:10.3390/app8091657

Cited by 7 publications

(4 citation statements)

References 29 publications

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“…It is worth mentioning that the top and the bottom ovens shown in figure 1 are responsible for controlling the thermal gradient through the PPLN crystal by inserting their temperatures to the boundary condition of equation (7). Moreover, this type of ovens has been tested on PP crystals to improve the frequency conversion performance [39,40].…”

Section: Theorymentioning

confidence: 99%

Orbital angular momentum sidebands in second harmonic generation of a vortex beam by a nonlinear crystal with inhomogeneous refractive index

Sabouri¹

2022

J. Opt.

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The manipulation of the orbital angular momentum (OAM) spectrum in new wavelengths generated by frequency conversion has a wide range of applications in quantum information technology and modern communications. Here, the second harmonic generation (SHG) of a vortex beam in a nonlinear crystal with an inhomogeneous refractive index is considered. It is shown that by using a segmented oven and generating a controllable temperature gradient along the thickness of the nonlinear crystal, a transverse phase mismatch can be induced in the vortex beam. Accordingly, the OAM spectrum of the vortex beam can be changed by generating new OAM components in the spectrum. Compared with the nonlinear Bragg diffraction method, the presented method has the advantage of longer interaction length and higher efficiency.

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Section: Theorymentioning

confidence: 99%

Orbital angular momentum sidebands in second harmonic generation of a vortex beam by a nonlinear crystal with inhomogeneous refractive index

Sabouri¹

2022

J. Opt.

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“…In 2018, Choge et al, experimented on developing a compact blue and orange two-colour CW laser emitting at 487 nm and from 597.4 nm to 600.3 nm, respectively [7]. Following the trend in RGB generation, Li et al [26], in the same year proposed a step-chirped phase matching structure to demonstrate a broadband and Triple-Wavelength CW Orange Laser at 594.9, 596.9, and 598.6 nm with a maximum output power of 9.3 mW, and output power stability of about ∼2.5% in 30 min using a MgO:PPLN through single-pass SFG [14]. Lim et al, used first-order QPM adhered slab waveguides with a PP Mgdoped SLT core to demonstrate RGB laser sources by OPG.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous RGB generation in domain engineered QPM devices using type 0 DFG process

Rajan¹,

Pandiyan²,

Karn³

et al. 2023

Laser Phys.

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We have theoretically demonstrated the simultaneous generation of red (R), green (G), and blue (B) wavelengths by employing the type-0 quasi-phase-matched (QPM) difference frequency generation (DFG) process in congruent LiNbO3 crystal. Various domain-engineered QPM structures are presented and analysed, aiming to achieve an excellent spectral response. The RGB emissions were observed to vary from 632 nm to 656 nm for red, 504 nm to 532 nm for green, and 449 nm to 484 nm for blue, respectively, for different configurations of input pump, operating temperature, and phase matching periods. A maximum shift of about 10 nm to 20 nm was noticed in the spectral position of the DFG peaks when the operating temperature varies from 25 °C to 60 °C. We have also investigated the effect of pump detuning and random domain fluctuations over the phase matching point on the DFG spectrum. Further, we have addressed the advantages of introducing a phase shifter (PS) domain in the periodically poled lithium niobate (PPLN) to produce excellent equal intensity RGB peaks in a single device for their potential application in a laser-based projection display system.

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“…Visible laser radiation has important applications in the fields of medical treatment, laser projection displays, defense and security. [1][2][3][4][5] In particular, the orange laser is of great interest in dermatology, ophthalmology and other biomedical optics for its high absorption in hemoglobin. 6) However, the light source in this spectral region is hard to directly realize by the traditional all solid-state laser.…”

Section: Introductionmentioning

confidence: 99%

Second-harmonic generation of Nd:YAlO₃/YVO₄ Raman laser optimization for orange emission

Sun

Duan

Zhang

et al. 2020

Jpn. J. Appl. Phys.

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The orange emission at 597 nm produced by the second-harmonic generation of an acousto-optic Q-switched Raman laser was reported. A diode-pumped Nd:YAlO3 laser emitting at 1080 nm was employed to intra-cavity drive the pure YVO4 Raman crystal to obtain the first-Stokes wavelength at 1195 nm. The second-harmonic optimization of the first-Stokes laser is compared between the coupled cavity and the shared cavity. The results show that the shared cavity has more advantages than the coupled cavity for its better mode matching between fundamental cavity and Raman cavity at higher power. At an absorbed pump power of 5.96 W and the pulse repetition frequency of 15 kHz, average output power of 587 mW and conversion efficiency of 9.8% were obtained for the orange emission at 597 nm in the Nd:YAlO3/YVO4/LBO laser system. The 597 nm laser has special application in the fields as polymer materials analysis and biomedical optics.

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Broadband and Triple-Wavelength Continuous Wave Orange Laser by Single-Pass Sum-Frequency Generation in Step-Chirped MgO:PPLN

Cited by 7 publications

References 29 publications

Orbital angular momentum sidebands in second harmonic generation of a vortex beam by a nonlinear crystal with inhomogeneous refractive index

Orbital angular momentum sidebands in second harmonic generation of a vortex beam by a nonlinear crystal with inhomogeneous refractive index

Simultaneous RGB generation in domain engineered QPM devices using type 0 DFG process

Second-harmonic generation of Nd:YAlO₃/YVO₄ Raman laser optimization for orange emission

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Broadband and Triple-Wavelength Continuous Wave Orange Laser by Single-Pass Sum-Frequency Generation in Step-Chirped MgO:PPLN

Cited by 7 publications

References 29 publications

Orbital angular momentum sidebands in second harmonic generation of a vortex beam by a nonlinear crystal with inhomogeneous refractive index

Orbital angular momentum sidebands in second harmonic generation of a vortex beam by a nonlinear crystal with inhomogeneous refractive index

Simultaneous RGB generation in domain engineered QPM devices using type 0 DFG process

Second-harmonic generation of Nd:YAlO3/YVO4 Raman laser optimization for orange emission

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Product

Resources

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Second-harmonic generation of Nd:YAlO₃/YVO₄ Raman laser optimization for orange emission