We offer fs-Kits for Type I third harmonic generation (THG) of ultrafast Ti:sapphire lasers. Each THG kit consists of the following four crystals,
(1) A BBO crystal for Type I second harmonic generation (SHG),
(2) A BBO Crystal for Type I sum frequency mixing to generate the THG,
(3) A calcite time delay compensator to be placed after the SHG crystal to optimize the temporal overlap of the pulses in the THG crystal,
(4) A dual waveplate to turn the orthogonal polarizations from the SHG crystal into parallel polarizations for Type I THG. The waveplate is ultrathin (~ 45 μm) single-plate, true zeroth order to maximize the bandwidth and to minimize the dispersion.
The configuration of the crystals for THG is presented under the "Tech Info" tab.
Standard BBO crystal apertures are 5, 10, 12 mm. The large aperture of 15 mm is available upon request. Thicknesses of the crystals are designed to maximize the THG conversion efficiency without the undesired broadening of the specified pulses. All crystals are mounted in OD 1" anodized aluminum holders and can be further mounted into conventional mirror mounts or rotation mounts for 1" optics for angular tuning. The mounts are not included in the THG kits, but are available upon request at additional costs or can be purchased separately from a third party (Ref. "Tech Info" tab).
The selection of the THG kit is highly dependent on the fundamental laser. Please send us an inquiry with your laser parameters, i.e. the central wavelength, pulse energy, repetition rate, and the beam size if you need an assistance.
Type II THG kits are also available. There is no need of the dual waveplate for Type II THG. The efficiency of Type II THG is in general lower than that of Type I.
Type I THG of ~ 35 fs pulses @ 800 nm
THG and FHG of ~150 fs, ~mJ, kHz pulses @ 800 nm
|Part No.||Description||Wavelength||Price||Availability||Add to Cart|
Type I THG (preceded by Type I SHG):
Type II THG (preceded by Type I SHG):
Mirror mounts for a quick setting-up of the THG:
Thorlabs KS1RS: Kinematic Rotation Mount for 1" Optics
Thorlabs VM1: Compact Kinematic Mount with Vertical Drive, 1" Optics
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