Where to Buy Frequency Doubling Devices

GWU's frequency conversion devices are flexible solutions for pulsed lasers. By means of second harmonic generation (SHG), third harmonic generation (THG) and fourth harmonic generation (FHG), not only the wavelength range but also the versatility of laser sources can be vastly extended. The UHG series offers widely tunable harmonic generation in a compact, modular design for ultrafast laser oscillators. Broadband optics for complete wavelength coverage ensure convenient usability and best performance.

Radiantis offers second harmonic generators for MHz repetition-rate femtosecond and picosecond Ti:sapphire oscillators with conversion of efficiencies of 50%. The company also provides femtosecond SHG devices to double the 990 – 1550 nm range into the 495 – 775 nm range. Products are fully automated. Customised frequency doublers for other spectral ranges can also be developed.

TOPTICA provides frequency-doubled continuous-wave diode and fiber lasers. The wavelength range covers 330 nm – 780 nm with up to 20 nm of tuning. In addition, stand-alone resonant frequency-doubling units are available.

Frequency doubling/SHG crystals: Covesion has SHG crystals and waveguides held in stock that can be dispatched promptly to meet your application requirements. Our team of industry-leading experts are on hand to assist in the fulfilment of more specific user requirements using our custom manufacturing capability.

Stock MgO:PPLN SHG crystals and waveguides are available for a wide range of common pump laser wavelengths from 976 nm to 3300 nm, allowing generation of light between 488 nm and 1650 nm.

All stock crystals come ready clip-mounted for seamless and straightforward integration into our crystal ovens.

The addition of MgO:PPLN waveguides to the Covesion product range allows end users to exploit greater conversion efficiencies and save on unnecessary pump sources within their applications. Waveguides are available as standalone chips or as robust, ruggedized packages with APC fiber connectors.

Nonlinear frequency conversion in SHG crystals makes it possible to generate new shorter wavelengths from existing laser wavelengths. As part of our HarmoniXX product line, the HarmoniXX SHG is a frequency converter for the frequency doubling of ultrashort-pulse lasers.

The focus is on user-friendliness and a compact design. By featuring a quick exchange of optics, the HarmoniXX Second Harmonic Generation device can be used for a wide pulse duration range, from femtoseconds (fs) to several picoseconds (ps).

See our specifications for more details.

Shalom EO offers a vast variety of nonlinear crystals for frequency doubling including BBO, KDP and KD^*P, PPLN waveguides, LBO, KTP, HGTR KTP, BIBO, LiNbO₃ and MgO:LiNbO₃ crystals, in addition to the infrared nonlinear crystals ZnGeP₂ (ZGP), LiIO₃ and KTA.

Both off-the-shelf and customized products are available.

Do you need to address the wavelengths of rubidium, strontium, barium, or ytterbium? With our new Koheras HARMONIK high-power frequency-converted laser systems, you can! The Koheras HARMONIK is a range of single-frequency mode-hop free and ultra-stable narrow-linewidth fiber lasers. They deliver high power and narrow linewidth light at the exact atomic transition you need for your quantum application. If you are looking for high-quality light for quantum computing, sensing, metrology, and communications, try this new class of lasers. They have an inherently robust single-frequency design with low phase and intensity noise, high OSNR, and high optical power. All with industrial reliability.

HC Photonics (HCP) offers both commercial off-the-shelf (COTS) and custom PPMgO:LN or PPMgO:LT based frequency doubling devices for wavelength ranging from 710 nm to 5000 nm.

The product mix includes bare crystals (bulk and waveguide) and plug-and-play fibered mixers. Key features:

• >200 kinds of commercial off-the-shelf (COTS) crystals with oven/holder for shipping today
• wavelength range: 710–5000 nm (355–2500 nm output after doubling)
• fibered mixer is single-pass, high-efficiency and optimized for specified input pumps
• available for fiber or free space as input/output coupling interfaces (such as 1×0, 1×1 or 0×0; 0 = free space, 1 = one fiber)
• >2W CW 780 nm 1×1 fibered waveguide mixer is an excellent device for quantum application
• >4 W visible 1x0 fibered bulk mixer is a robust, compact and easy-to-use device for biophotonics, metrology and quantum applications

Our nonlinear crystals for second harmonic generation include a wide choice of BBO, LBO, DKDP, KDP and KTP crystals for quick delivery. We also offer AgGaS₂, AgGaSe₂, GaSe, ZnGeP₂, LiIO₃ and KTA crystals for SHG at IR and mid-IR wavelengths. We also offer technical consulting services helping to choose and specify optimal crystal material, orientation and coating design for your particular application.