The Definitive Guide to KTP Crystal
The Definitive Guide to KTP Crystal
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The KTP crystal is really a nonlinear optical product that will transform the frequency of light. The KTP crystal is Lower and oriented in such a way that it satisfies the stage matching situation for next harmonic era (SHG), which implies that two photons on the input beam can combine to produce just one photon of two times the frequency (or 50 percent the wavelength) at 532 nm (eco-friendly).
The latter include things like Nd:YAG as well as other neodymium-doped lasers. (Contact us to request unique information on our KTP to find out if it is right on your software.)
The maximum repetition level has actually been determined by the utmost repetition fee of the intracavity EO modulator (Laptop) used for seeding in and extracting pulses within the amplifier. The Laptop repetition is proscribed via the damping level with the oscillations from the crystal birefringence that occur through the excitation of For each within the crystal. The For each is generated in the piezoelectric outcome and might be quantified using the piezoelectric continual relevant to crystal structure and ferroelectric domains. PER of KDP and KTP had been captured at superior voltage from ten kHz to two hundred kHz are illustrated in Fig.
Interests: ferroelectrics; area structure; area engineering; nonlinear optics; nanotechnology; light-weight frequency conversion
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Supersaturation happens, and crystals begin to increase since the temperature is slowly lessened. The containment chamber is extracted and Reduce open. If all has absent nicely, and with a little bit of luck, oriented KTP crystals have grown outward from both sides of your seeds.
Figure 8a reveals the principal refractive indices on the H-KTP. Although Sellmeier’s equations (Fig. 8b) work out its class II stage-matching angle of 23.3925° for your 532 nm laser generated by frequency doubling at 1064 nm at room temperature, which can be lesser compared to 26° noted by the earlier hydrothermal method, and in addition it's inconsistent with the outcomes we received during the year of 2008, The rationale for which is not apparent to us, and also indicates the crystal framework and Houses will improve as a consequence of the difference of technique circumstances.
The output beam from your dichroic mirror is made up of only the environmentally friendly beam, which has a wavelength of 532 nm and an influence of 300 mW. The output beam may be used for a variety of applications such as laser displays, medical lasers, or spectroscopy.
Far better optical inhomogeneity can Enhance the extinction ratio of EO change and beam excellent of your laser. They're the wants while in the programs of KTP. Also, we observed some dissimilarities with regular know-how in the actual study procedure. We've also noticed that static strain depolarization is an issue in KTP, unlike in DKDP and z-axis LN.
In the event the KTP crystal is employed being an EO modulator, the utilized electrical industry is parallel for the z-axis, and the light propagation course is parallel into the y-axis or x-axis. If a comparatively reduce change-off voltage is ideal, a y-axis change is needed. In follow, long x-axis switches are often utilized to obtain the specified low transform-off voltage for crystal expansion economics. The E-O website coefficient on the H-KTP crystal could be determined as adhere to in Desk 3. Our EO coefficient measurement results at 632.eight nm are according to the 1986 take a look at final results utilizing the hydrothermal strategy KTP32.
Through a series of science and technological innovation, we understand The expansion of enormous-size crystals with superior-optical uniformity, then decrease the absorption of KTP to an exceptionally minimal stage, and develop crystals with resistance to electric powered harm and laser problems. On this foundation, reducing the conductivity and improving upon the uniformity of optical, electrical, piezoelectric, and ferroelectric Qualities are emphasised. The extinction ratio, piezoelectric ringing effect, and thermal influence in the EO swap determined by KTP crystal are analyzed, and some publicly offered development of utilizing KTP EO units in large-repetition rate laser is outlined. At last, we're wanting ahead to the development of KTP EO crystal to the laser program to EO generator for integrated optics.
The environmentally friendly laser radiation that KTP produces has numerous apps. Inexperienced laser gentle has fantastic penetration via ocean water, so it can be employed for conversation and bathymetric measurement of the sea ground and riverbed options.