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06-23

2026

Acousto-Optic Device Selection Guide

We offer a comprehensive range of acousto-optic devices covering all wavelength and power ranges, backed by over thirty years of experience in the laser industry.

2026-06-23

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

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

02-05

2026

Continuous Innovation: Manufacturing Optical Components with Higher Laser-Induced Damage Thresholds

CASTECH employs various LIDT test methods, including R-on-1, S-on-1, 1-on-1, and N-on-1. The appropriate method is selected based on the specific characteristics of the product and customer requirements to monitor the damage threshold of substrate materials, polished components, and coating surfaces.

2026-02-05

Continuous Innovation: Manufacturing Optical Components with Higher Laser-Induced Damage Thresholds

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