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Waveguide Crystal

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Waveguide crystals can be fabricated using periodically polarized crystals as substrates through ridge-shaped, APE, RPE, and other methods. Compared to PPLN bulk crystals, PPLN bulk crystals are easier to use and can handle high optical power (up to several watts or even higher); while PPLN waveguide crystals can provide higher conversion efficiency, further expanding related applications.

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- Commodity name: Waveguide Crystal
Waveguide crystals can be fabricated using periodically polarized crystals as substrates through ridge-shaped, APE, RPE, and other methods. Compared to PPLN bulk crystals, PPLN bulk crystals are easier to use and can handle high optical power (up to several watts or even higher); while PPLN waveguide crystals can provide higher conversion efficiency, further expanding related applications.
Waveguide crystals can be fabricated using periodically polarized crystals as substrates through ridge-shaped, APE, RPE, and other methods. Compared to PPLN bulk crystals, PPLN bulk crystals are easier to use and can handle high optical power (up to several watts or even higher); while PPLN waveguide crystals can provide higher conversion efficiency, further expanding related applications.

Advantage:
- Can be used for upconversion (SHG/SFG) and downconversion (DFG/OPA/OPO) frequency conversion
- Uniform or chirped QPM structure
- Strict quality control
- Precision waveguide end-face polishing and coating
Ruike Crystal Technology offers two types of waveguides to meet different application needs: proton-diffused waveguides (APE) and ridge waveguides. Compared to traditional ion- or proton-diffused waveguides, ridge waveguides, due to their higher core (LiNbO3 material) and cladding refractive indices, exhibit higher damage thresholds and wider operating wavelengths. The waveguide crystals possess high conversion efficiency and extremely low transmission loss.

Technical parameters
Type	1560nm SHG, 2200nm SHG etc.
Cycle (μm）	Standard/Custom(4um~200µm)
Wavelength	1560nm-780nm; 2200nm-1100nm
Operating temperature	25℃~200℃
Size(mm³)	Standard/Custom
Duty cycle	45%-55% /Customization
Waveguide type	APE/Ridge/Ti diffusion
Parallelism	≤10”
Verticality	≤10′
Cleanliness	20/10
Edge	No edge breakage

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(nm)

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(nm)

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Membrane parameters

WG-1910-1940-M-X

WG-2950-S-X

customized

19.1~19.4,

29.5，customized

customized

Note: For customized products, please refer to the technical specifications and discuss the solution with our engineers.

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