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Pockels cells

Pockels Cells are important electro-optic device which exploit the pockels effect. Applying a constant or varying voltage (electric field) on Electro-Optic Crystals can cause the crystal birefringence to change linearly.

用于电光应用的 BBO 晶体

β-硼酸钡（BBO）晶体是一种优异的电光晶体，适用于波长范围从200nm到2500nm的高功率应用。它可用作电光Q开关晶体。β-BBO晶体或β-硼酸钡晶体在激光功率承受能力、高损伤阈值、温度稳定性以及几乎不受压电振铃影响方面，相较于其他材料具有显著优势。

Introduction to Waveplates and Retarders

It is crucial for buyers to discriminate the differences between the various types of Waveplates and Retarders, here is a general, simple and approachable introduction about waveplates and retarders, to help you understand better the differences and traits of each type of them.

Super Achromatic Waveplates

Shalom EO recently joined the development of Super Achromatic Waveplates. Unlike conventional achromatic waveplates, super achromatic waveplates consist of six waveplates aligned together, three made from quartz (Crystalline SiO2) and three made from magnesium fluoride (MgF2). With an increased number of composing waveplates, this design minimizes the fluctuations of retardation and substantially broadens the application spectrum from the UV to the NIR.

Introduction to Acousto-Optic Crystals

Acousto-Optic Crystals are crystals that exhibits photoelastic effects, where mechanical waves stimulate elastic strains in the crystals, acting as periodic phase gratings and alters the refractive indices, leading to changes in the optical properties. The AO crystals are excellent candidates for to be processed into the acouto-optic medium of the Acousto-Optic Modulators (AOM) including AO Q-switch, Acousto-Optic Deflectors (AOD), Acousto-Optic Frequency Shifter (AOFS), and Acousto-Optic Tunable Filters (AOTF), etc.

超薄高精度光学窗片的双面抛光工艺

杭州煦和光电（Shalom EO）研发的双面抛光工艺，解决了超薄光学窗片加工中的应力释放问题，实现了λ/10平整度、10/5表面质量和10角秒平行度。提供BK7、紫外熔融石英、石英晶体等高精度窗口，适用于飞秒激光系统和精密光学应用。

What is Second Harmonic Generation (SHG)

The application of the Second Harmonic Generation (SHG) technique is boosting currently. The technique has been utilized extensively as a measure to obtain laser light with short wavelengths which are not directly procurable, for example, 532nm green output for Nd: YAG lasers, or ultra-violet lights with further SHG. The equations and definitions of second harmonic generation are given in this article to deliver an elaborate theoretical explanation about shg.

Optical Basics: What is FOV (Field of View)

For optical imaging instruments and components, understanding the basic concept of FOV (Field of View) is fundamental for selecting the appropriate optical lenses and components that meet your specific requirements. Here Shalom EO will state the definitions, the equations, and the real-life interpretations of these concepts.

Optical Substrate Material Selection Guide

The selection of optical substrate material is a vital step to determine the best appropriate optics for your individual applications. The characteristics(optical transmission, refractive index, hardness, etc.) of representative optical materials such as N-BK7, UV Fused Silica, Zerodur Glass, Chalcogenide Glass, BaF2, CaF2, MgF2, Germanium, Zinc Selenide, ZnS, Sapphire, Silicon, alpha-bbo, calcite, YVO4, and F2 glass are introduced and compared in this article from Shalom.

Optical Basics: Spherical Aberrations and Coma

This is a short piece of explanations about spherical aberrations and coma/comatic aberrations, which belong to the wider range of optical aberrations. Straightforward and readable detailed information, illustration diagrams of the complex and intriguing concepts of spherical aberrations and coma/comatic aberrations.,
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