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05-22

2026

How Aspheric Surfaces Are "Forged"

Let’s step into CASTECH’s Aspheric Processing Center to take a deeper look into the precision machining of computer-numerical-controlled (CNC) aspheric lenses

2026-05-22

05-19

2026

F-theta Lens: How Does Laser Achieve “Point-and-Shoot”? Technical Principles and Selection Guide

Introduce a key optical component that plays a critical role in laser precision processing systems—the F-theta lens

2026-05-19

F-theta Lens: How Does Laser Achieve “Point-and-Shoot”? Technical Principles and Selection Guide

04-17

2026

The Compass for Precise Optical Conversion: Decoding the Crystal Product Marking System

We provide a detailed introduction to the scientific principles and prctical significance behind our crystal product marking system, ensuring optimal results for each experiment.

2026-04-17

The Compass for Precise Optical Conversion: Decoding the Crystal Product Marking System

04-17

2026

OPIE 2026

2026-04-17

03-12

2026

LASER World of PHOTONICS CHINA 2026

CASTECH will participate in The LASER World of PHOTONICS CHINA 2026 from March 18th to 20th, 2026.

2026-03-12

02-28

2026

Characteristics and Applications of High-Repetition-Rate Electro-Optic Modulators

An electro-optic modulator is an optical modulation device based on the electro-optic effect. When a driving voltage is applied to the electro-optic modulator, the orientation of the optical axis within the internal electro-optic crystal rotates, leading to changes in the crystal's refractive index distribution. Due to the different propagation velocities of the ordinary (o) and extraordinary (e) rays inside the crystal, a phase difference arises between them when they reach the same position. This phase difference is dependent on the voltage applied to the crystal.

2026-02-28

Characteristics and Applications of High-Repetition-Rate Electro-Optic Modulators

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