5 Simple Techniques For PPKTP Crystal
5 Simple Techniques For PPKTP Crystal
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I hope this e-mail finds you nicely. I'm crafting to inquire about the configuration of your SPDC810N. Even though It is far from explicitly said whether it's depending on a Sagnac configuration, it appears for being using a kind-II collinear SPDC system to generate polarization-entangled photons. Even so, for the purpose of representing Bell states, it's important with the SPDC810N to have a Sagnac configuration throughout the era means of SPDC photon pairs internally.
We exhibit a wavelength-tunable, fiber-coupled supply of polarization-entangled photons with incredibly superior spectral brightness and high quality of entanglement. Utilizing a 25 mm PPKTP crystal inside a polarization Sagnac interferometer we detect a spectral brightness of 273000 pairs/(s mW nm), a factor of 28 better than equivalent former sources while point out tomography showed the two-photon state .
Our Periodically Poled KTP (PPKTP) is diligently handled through storage and transportation to maintain the standard of our product in its unique ailment.
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Moreover, The 2 JSI distributions may possibly occur in numerous spectral bandwidths which has to be compensated using sufficiently slender bandpass filters in order to stay away from spectral distinguishability. This could further more impact the magnitude of the two amplitudes.
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The type-0/form-two is determined from the polling period and is a thing that really should be identified with the manufacture stage, even though degeneracy and collinearity could be fantastic-tuned by temperature (to stay away from Operating at strange temperatures, it can be advised to specify these parameters beforehand and alter the polling time period).
Evaluating our plan Together with the prior entangled photon source that has a GVM-PPKTP crystal in a very calcite beam displacer configuration at telecom wavelength [thirty], our depend premiums are much more than one hundred times higher, predominantly thanks to our very successful SNSPDs and high-quality alignment in Sagnac-loop.
Our state-of-the-artwork facilities and commitment to innovation make certain that every PPKTP crystal fulfills the best requirements of performance and reliability.
9 nm. With rising crystal periodicity Λ the wavelengths λ B and λ R are approaching one another which provides increase to the opportunity of creating entangled photon pairs with related bandwidths and team velocities, as depicted by the correct inset graph more than the light blue dashed line. The calculations ended up performed assuming a crystal temperature of T�? fifty °C. Even so, the actual temperature demanded for exact matching of horizontal and vertical wavelength might range as a consequence of imperfection on the utilised dispersion equations27,28,29.
Thank you for achieving out to us using this type of inquiry. Whilst it isn't going to look such as this is a more info product which we at the moment have, I have reached out to you straight to focus on a potential substitute.
A high-quality alignment on the Sagnac loop is tough. Thus, we make a mathematical simulation [forty four] to simulate the beam propagations inside a triangle shape Sagnac-loop. From this simulation, we are able to discover which the output beams are normally in parallel, but under no circumstances cross. As a way to attain a very collinear configuration for both equally the CW and CCW pump beams, the residual pump beams have to overlap While using the enter laser.
The joint spectral intensity (JSI) of the SPDC procedure is the probability distribution operate of specific sign and idler wavelength pairs becoming emitted. It truly is represented as the square about the joint spectral amplitude (JSA) which can be the solution of pump- and section-matching envelope amplitude: