Blue light generation in a ridge waveguide MgO:LiNbO_3 crystal pumped by a fiber Bragg grating stabilized laser diode

Sakai, Kiyohide; Koyata, Yasuharu; Hirano, Y.

doi:10.1364/ol.32.002342

Cited by 26 publications

(15 citation statements)

References 11 publications

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“…This behavior has already been reported in Ref. [15][16][17][18][19][20][21][22][23] and may be related to inhomogeneities of the waveguide which prevent the destructive interference of the SH power. In case of crystal C, a strong asymmetry is observed between upper and lower lobes.…”

Section: Sh Efficiency and Evolution In Timesupporting

confidence: 77%

“…However the SH power at the output of crystal B clearly departs from the theoretical curve above 150 mW of IR input power and some saturation appears (dash line). This effect was already reported for waveguide PPLN crystals [15][16][17]. It was shown to be essentially due to the green induced infrared absorption (GRIIRA) in the guide [17].…”

Section: Sh Efficiency and Evolution In Timesupporting

confidence: 66%

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CW frequency doubling of 1029nm radiation using single pass bulk and waveguide PPLN crystals

Chiodo¹,

Burck²,

Hrabina³

et al. 2013

Optics Communications

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a b s t r a c tFollowing various works on second harmonic process using periodically poled Lithium Niobate crystals (PPLN), we report on the performances comparison between commercial bulk and proton-exchanged waveguide crystals operating at 1029 nm. We use a continuous wave (CW) amplified Yb doped single fiber laser delivering up to 500 mW in single mode regime. In case of bulk crystal we generate 4 mW using 400 mW IR power. The use of waveguide crystal leads to an increase of the harmonic power up to 33 mW with input IR power limited to 200 mW. Nevertheless, this impressive efficiency was affected by the long term degradation of the non-linear waveguide crystal. A decrease of about 40% of the conversion efficiency was observed after 2 years of use, neither associated to the degradation of the coupling efficiency nor to that of the AR coating. This behavior could be attributed to a slow diffusion of protons in the guide.

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Section: Sh Efficiency and Evolution In Timesupporting

confidence: 77%

Section: Sh Efficiency and Evolution In Timesupporting

confidence: 66%

CW frequency doubling of 1029nm radiation using single pass bulk and waveguide PPLN crystals

Chiodo¹,

Burck²,

Hrabina³

et al. 2013

Optics Communications

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“…With a tilted aspherical lens, a fiber to waveguide coupling efficiency of 62% was demonstrated. With a fundamental power of 320 mW coupled into the waveguide, 73 mW at 489 nm could be generated [130]. b) SHG using DFB and DBR RW lasers By using a ridge waveguide DBR diode laser butt coupled to an 8 mm long PPKTP crystal with a 4 4 μm 2 channel waveguide, cw light with powers of up to 4 mW at a wavelength of 425 nm were generated with 150 mW fundamental power.…”

Section: Shg With Diode Lasers and Waveguide Crystalsmentioning

confidence: 99%

Blue‐green light generation using high brilliance edge emitting diode lasers

Jechow¹,

Menzel

Paschke

et al. 2010

Laser & Photonics Reviews

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A review about second harmonic generation using edge emitting diode lasers and nonlinear crystals to obtain laser radiation in the blue-green spectral range is presented. Therefore, pump laser radiation with high brightness and narrow bandwidth is necessary. Thus, this review gives an overview of the advances made with distributed feedback and Bragg reflector lasers, tapered lasers and amplifiers as well as external cavity diode lasers and master oscillator power amplifier schemes to achieve high brilliance emission. Since periodically poled materials have enabled high second harmonic conversion efficiencies with low and moderate pump powers, the review is focused on frequency doubling using those materials. The most commonly used materials, their properties and limitations are discussed briefly. Single pass and resonant SHG setups with waveguide and bulk nonlinear crystals are discussed and an emphasis on building compact and integrated devices is made. PPLN waveguide crystal pumped by a DFB laser (above). Integrated SHG device on a CCP heatsink (below).

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“…Thus, the fundamental power required for high conversion efficiency is significantly reduced, thereby opening up the possibilities of highly efficient compact SHG lasers. MgO:PPLN has achieved a great success in generating highly efficient compact CW green and blue laser (Sun and Xu 2012;SaKai et al 2007;Jechow et al 2007). However, for applications in high powers, the optical absorption is a serious obstacle (Schwesyg et al 2010).…”

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confidence: 99%

Possibility of high power UV light generation in periodically poled MgO doped lithium niobate waveguides

Wang

Cui

2014

Opt Quant Electron

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This study investigates limitations of high power single-pass 399 nm light generations in periodically poled 5 mol% MgO doped lithium niobate (PPMgLN) waveguides arising from optical absorptions and the resulting thermal loading. A coupled thermo-optical model was employed to simulate 399 nm light generation process. It was found that after optimizing the waveguide length and the operating temperature, the output power of 0.393 W with almost no thermal inhibition can be achieved, which corresponds to a conversion efficiency of 78.6 %. It is expected that a compact and efficient high power 399 nm lasers can be realized by second harmonic generation in PPMgLN waveguides.

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Blue light generation in a ridge waveguide MgO:LiNbO_3 crystal pumped by a fiber Bragg grating stabilized laser diode

Cited by 26 publications

References 11 publications

CW frequency doubling of 1029nm radiation using single pass bulk and waveguide PPLN crystals

CW frequency doubling of 1029nm radiation using single pass bulk and waveguide PPLN crystals

Blue‐green light generation using high brilliance edge emitting diode lasers

Possibility of high power UV light generation in periodically poled MgO doped lithium niobate waveguides

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