Custom Gold Coated YAG Pump Cavities & Laser Reflectors

Gold Coated YAG Pump Cavities & Laser Reflectors Product Description

Using high-quality undoped YAG crystals as substrates, our company employs Physical Vapor Deposition (PVD) to deposit highly dense, strongly adherent gold reflective coatings—or protective, performance-enhancing gold coatings—onto the crystal surfaces.

Applying gold coatings to YAG crystal rods or slabs facilitates heat dissipation and enables soldering. Furthermore, serving as the core reflective component of the laser head, these high-quality gold-coated pump cavities maximize the pumping efficiency of solid-state laser systems by effectively focusing light into the gain medium. Gold-coated YAG pump cavities and laser reflectors are suitable for applications such as high-power laser resonator mirrors, infrared spectral imaging, and LiDAR scanning.

Gold Coated YAG Pump Cavities & Laser Reflectors Key Features

1. The gold coating exhibits high reflectivity across the spectrum from 0.8 µm to the far-infrared, while achieving over 97% transmission in the mid- to far-infrared range, thereby meeting the requirements of virtually all mid- and far-infrared laser applications.
2. The undoped YAG substrate itself possesses a high laser damage threshold and exceptional thermal conductivity; when combined with the deposited gold film, it enables the mirror to operate stably under high-power laser conditions.
3. We employ ion-assisted deposition and PVD (Physical Vapor Deposition) to ensure strong adhesion of the gold film to the YAG surface, allowing for durable, long-term use.

Why Choosing Our Gold Coated YAG Pump Cavities & Laser Reflectors

• We control the quality of the undoped YAG material at the source and handle the entire production process—including cutting, grinding, polishing, coating, and inspection—ensuring manageable delivery timelines.
• Thanks to the inherent material advantages of undoped YAG—such as its thermal conductivity, Mohs hardness, and high transmittance across the visible to mid-infrared spectrum—gold-coated YAG mirrors offer a significantly longer service life compared to gold-coated mirrors made from other substrates.
• Our coating process is optimized for high laser damage thresholds, enabling the gold film to operate stably over the long term under high-power laser conditions.
• We offer flexible customization services, including tailored dimensions and shapes. Additionally, customers can choose from various coating configurations—such as pure gold, protected gold, or dielectric-enhanced gold—and we also provide aperture drilling services for the YAG substrates.

Gold Coated YAG Pump Cavities & Laser Reflectors Custom Capability

Gold Coated YAG Pump Cavities & Laser Reflectors Applications

High-Power Laser Systems

Gold coatings exhibit high reflectivity in the infrared spectrum, while YAG crystals possess exceptional thermal conductivity and heat dissipation capabilities. When YAG reflectors—coated with pure gold or dielectric-protected enhanced gold—are installed as total reflectors within the resonant cavity of a CO₂ laser, they facilitate the multiple-pass amplification of the gas laser output. This ensures consistency in features such as cut edges and weld seams.

Mid- and Far-Infrared Imaging

Gold-coated YAG components can be integrated as reflectors into Fourier Transform Infrared (FTIR) spectrometers, infrared microscopes, and thermal imagers. These gold-coated mirrors focus infrared radiation onto the sample and subsequently collect the signal, ensuring analytical accuracy and stability.

Medical Aesthetic Laser Equipment

In devices such as Q-switched Nd:YAG tattoo removal systems and long-pulse hair removal lasers, gold-coated cavities are typically installed within the laser handpiece and main unit. These components maintain chemical stability even in water-cooled environments, ensuring the equipment delivers stable, high-peak-power energy.