This informative article dives deep into the benefits and special properties of BBO crystal and its paramount relevance in successful frequency doubling and harmonics technology at 266nm.
In many scenarios, a nonlinear crystal utilized for nonlinear frequency conversion has an exceedingly extensive life span, that is for a longer period than that of The entire laser program. The crystal materials is actually not modified in the course of operation. However, a diminished crystal lifetime can arise under many situations:
These Houses make BBO crystals really fascinating in different purposes, from laser frequency conversion to electro-optic modulation. Their huge transparency variety makes it possible for them to work by using a broad array of laser wavelengths, although their superior damage threshold assures they could cope with significant-electricity laser beams with no degradation.
Figure 23: This diagram illustrates a beam's focal area in a uniaxial birefringent product. Straight lines, representing rays, are drawn from the Heart with the beam waistline. As being the beam diverges from your beam waistline, the Vitality within the beam is dispersed more than a bigger cross sectional area.
The sort-I section matching method relies on matching the common and extraordinary indices of refraction for the elemental and second-harmonic frequencies, which happens to be reached as a result of specific orientation of the crystal optic axis and input propagation vector. A concentrated laser pulse, or beam, has angular content material, formally referred to as spatial frequencies, to provide the tiny focal location.
If the crystal surfaces remain “dirty�?after the above mentioned cleaning treatments, the surfaces might have been weakened. Remember to Make contact with us for rework with the crystals.
Determine 22: The diagram at the highest reveals two pulses with distinct Centre frequencies incident on a material. The team velocity delay involving the pulses whenever they enter the fabric is zero.
Along with their use in laser frequency conversion, BBO crystals have discovered applications in electro-optic modulation and quantum optics experiments.
We also layer our things with anti-reflection levels to reduce representation losses on the crystal surfaces.
GWU-Lasertechnik presents all common nonlinear crystals like LBO, BBO and KTP having a broad a number of specifications. Beside the properly-recognized resources, innovative crystals like CLBO or BiBO with excellent Homes for e. g. deep-UV era or superior-electrical power ultrashort pulse lasers can be obtained. Regardless of if individual parts for R & D reasons are required or Price tag-successful quantities in compact, medium or substantial batches with in-time delivery to the output line are needed: GWU’s devoted company helps to discover the greatest Main components on your software.
Newlight's BBO crystals are already greatly Utilized in 2nd, 3rd, fourth or fifth harmonic generations for high electric power seen/UV sources, and optical parametric conversions for prime electric power broadly tunable resources.
The development rate is dependent upon the temperature gradient, rotation level, pulling charge, melt make-up, and oxygen stress. We diligently keep an eye on these variables for the duration of the event treatment to guarantee the uniformity and excellent in the boule.
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Figure fourteen reveals a departure from a perfect polarization orientation for Form-I SHG, exactly where the incident fundamental area provides a linear polarization but is rotated by a diploma γ with the principal common axis .