Where to Buy Nonlinear Crystal Materials

Nonlinear crystals of either β-barium borate (BBO) or lithium triborate (LBO) are used for frequency conversion of laser sources. BBO crystals feature thicknesses from 0.2 mm to 0.5 mm to minimize group velocity mismatch and are ideal for frequency doubling or tripling of Ti:sapphire and Yb:doped laser pulses. The critical and noncritical phase matching LBO crystals are ideal for second or third harmonic generation of Nd:YAG and Yb:doped lasers.

Nonlinear crystals with 20-10 surface quality and λ/10 (LBO) or λ/8 (BBO) surface flatness provide the broad transparency range and large nonlinear coefficient needed for the harmonic generation of fundamental laser frequencies. Each crystal features a protective anti-reflection (AR) coating that minimizes reflection and limits fogging from ambient conditions.

Most of the standard nonlinear crystals like BBO, LBO, BiBO or KTP for frequency doubling, tripling and quadrupling of the fundamental laser radiation are available from stock. Customer-specific dimensions and AR coatings are also offered at competitive prices.

GWU-Lasertechnik offers all standard nonlinear crystals like LBO, BBO and KTP with a broad variety of specifications. Beside the well-established materials, innovative crystals like CLBO or BiBO with outstanding properties for e. g. deep-UV generation or high-power ultrashort pulse lasers are available. No matter if individual pieces for R & D purposes are required or cost-efficient numbers in small, medium or large batches with in-time delivery for the production line are needed: GWU’s dedicated service helps to find the best core components for your application. GWU-Lasertechnik has more than 30 years of experience in distributing laser crystals. Choose GWU to benefit from our wide knowledge and in-field experience!

Shalom EO offers a vast variety of nonlinear crystals: BBO, KDP and KD^*P, LBO, KTP, HGTR KTP, KTA, BIBO, LiIO₃, LiNbO₃, MgO:LiNbO₃, RTP, ultra-thin BBO, LBO crystals and infrared nonlinear crystals ZnGeP₂ (ZGP).

Our products are excellent for applications ranging from frequency conversion to short-pulse generation. They are used for harmonic generation (SHG, THG, 4HG, 5HG), sum and difference frequency generation (SFG, DFG), for optical parametric oscillators (OPOs) and optical parametric amplifiers (OPAs). Note that for all the products listed above, off-the-shelf and customized products are optional to our customers.

Artifex Engineering provides finished crystal optics for non-linear applications. Visit our product page for more information. We look forward to your inquiry.

Periodically poled lithium niobate: magnesium-doped PPLN is ideal for innovative laser applications due to its high effective nonlinear coefficient; allowing for high efficiency frequency conversion across multiple different mechanisms.

Covesion is a world leader in the design and manufacture of periodically poled lithium niobate for non-linear frequency conversion. MgO:PPLN crystals are available for high efficiency SHG, DFG, SFG and OPO interactions. Wavelength generation coverage runs from visible to mid-IR.

Periodic poling allows for quasi phase matching, which maintains phase relation of the photons throughout the crystal where they would otherwise fall out of phase. This engineered effect leads to a much higher conversion efficiency than would be found in the regular crystal.

Readily available stock crystals and waveguides can be provided on short timescales to rapidly meet your application needs, providing the capability to generate laser light in a wide range of wavelengths.

See us at OPIE ’23 in Pacifico Yokohama, Japan, April 19–21 (booth J-34) and CLEO 2023 in San Jose, May 7–12!

HC Photonics (HCP) provides various high efficiency nonlinear crystals to enable full-spectrum applications, including periodically poled lithium niobate (pp-LiNbO₃, PPLN) and periodically poled lithium tantalate (LiTaO₃)/PPLT.

Features and service:

• more than 250 commercial off-the-shelf PPMgO:LN bulk crystals for wavelength conversions: QPM pattern: single, multiple, and fan-out; configuration: SHG, SFG, DFG, OPG, OPO, OPA; wavelength range: UV (355 nm) to mid-infrared (5000 nm)
• custom-made solutions: QPM period: 2–1000 μm; QPM pattern: single, multiple, fan-out, chirped, cascade, 2D; dimension: length 0.3–80 mm, width 0.1–40 mm, thickness 0.2–5 mm); configuration: SHG, SFG, DFG, OPG, OPO, OPA, THG, SHG+SFG; wavelength range: UV (355 nm) to mid-infrared (5000 nm) and THz; material: PPMgO:LN or PPMgO:LT
• PPLN waveguides: excellent performance, i.e. >50% overall efficiency. Fibered module generating >2 W at 780 nm (1560 nm SHG) is off-the-shelf. Crystals for other wavelengths are also available or can be designed upon request.

EKSMA Optics offers a complete portfolio of nonlinear optical crystals: BBO, LBO, KTP, KDP, DKDP, LiIO₃, LiNbO₃, MgO:LiNbO₃, AGS, AGSe, ZGP, GaSe, CdSe from stock or manufactured according to customers specifications or for specific applications.