Double-Convex Lenses are most suitable where the conjugates are on opposite sides of the lenses and the ratio of the distances is less than 5:1, e.g. as simple image relay components.

Plano-Concave Lens have one flat and one inward curved surface. PV lenses have a negative focal length and are used for image reduction or to spread light.

Double-Concave Lens, also named Bi-Concave Lens, is used to divergent light. It is best used when the input beam is converging.

Meniscus Lens can increase the NA of the system while only adding slightly to the total spherical aberrations. The Negative Meniscus Lens is used to increase the focal length of another lens while maintaining the angular resolution of the optical assembly

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Whenever light passes from one medium into another medium with different optical properties, most notably refractive index, part of the light is reflected and part of the light is transmitted. The intensity ratio of the reflected and refracted components is a function mainly of the difference in refractive index among the materials, the polarization of the incident light and the angle incidence.

BBO is a nonlinear optical crystal with combination of number of unique features. Wide transparency and phase matching ranges, large nonlinear coefficient, high damage threshold and excellent optical homogeneity provide attractive possibilities for various nonlinear optical applications

Potassium Titanyl Phosphate (KTiOPO3 or KTP) is widely used in both commercial and military lasers including laboratory and medical systems, range-finders, lidar, optical communication and industrial systems.

LiNbO3 Crystal is widely used as frequency doublers for wavelength > 1μm and optical parametric oscillators (OPOs) pumped at 1064 nm and quasi-phase-matched (QPM) devices. Additionally due to its large Electro-Optic(E-O) and Acousto-Optic(A-O) coefficients,, LiNbO3 is the most commonly used material for Pockel Cells,Q-switches and phase nodulators,waveguide substrate,and surface acoustic wave (SAW) wafers,etc.

Neodymium Doped Yttrium Orthovanadate (Nd:YVO4)

Nd:YAG is the earliest and most famous laser host crystal. Since it combines great advantages in many basic properties, Nd:YAG is the ubiquitous presence for near-infrared solid-state lasers and their frequency-doubler, tripler, and higher order multiplier.

Main Advantage： Large Verdet Constant (35 Rad T-1m-1). Low optical losses (1GW/cm2). Main Application：Faraday Rotator, Optical Isolator etc..