Er/Cr/Yb Doped Erbium Glass Laser
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Ships from:
China
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On FindLight:
since 2019
Description
The Erbium Glass doped with Er3+, Yb3+, and Cr3+ serves as a significant advancement in laser technology, providing a coherent light source in the spectral range near 1.5 µm. This wavelength is particularly notable for being relatively safe for the human eye, making it advantageous in various fields. The innovation of this erbium-doped glass laser finds its use in lidar systems, range measurements, fiber-optic communication, and laser surgery, showcasing its versatility and importance in modern technology.
Despite the advancements in InGaAs laser diode pump sources, the traditional Xe flashlamp remains a reliable and cost-effective choice for pumping Er:glass lasers. The simplicity of design and high reliability of Xe flashlamps continue to make them a preferred option. Interestingly, about half of the flashlamp's radiation energy is emitted in the visible and near-infrared ranges. To maximize the utilization of this energy, a second sensitizer, Cr3+, is introduced into Yb-Er laser glasses, enhancing the overall efficiency and performance of the system.
This erbium glass technology is meticulously crafted to meet precise specifications, ensuring optimal performance. The orientation tolerance is maintained at less than 0.5°, while the thickness and diameter tolerance are kept within ±0.05 mm. The surface flatness is controlled at <λ/4@632 nm, ensuring minimal wavefront distortion. Furthermore, the surface quality is maintained at <λ/8@632 nm with a perpendicular measurement of 10-5 (MIL-O-13830A). The product boasts a clear aperture of over 90%, with maximum dimensions ranging from 3 to 12.7 mm in diameter and 3 to 150 mm in length.
Er/Cr/Yb Doped Erbium Glass Laser
Specifications |
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|---|---|
| Type Of Crystal: | Er Glass |
| Crystal Diameter: | 3 mm |
| Crystal Length: | 30 mm |
| AR Coating: | One side |
| Refractive Index (d 589.3nm): | 1.539 1.541 |
| Materials: | Cr14 CrE5 |
| Thermal Conductivity: | 0.7 0.8 |
| Coeff.of Linear Thermal Expansion (10-7 /K) (20~100℃): | 103 80.5 |
| Transformation Temp. (ºC): | 455 476 |
| Dn/dT (10-6 /ºC) (20~100ºC): | -5.2 -6.8 |
| Refractive Index @ 1535 Nm: | 1.53 1.533 |
Features
- High Laser Efficiency: Optimized doping levels enable superior laser output power.
- Low Laser Threshold: Requires minimal pump energy to achieve lasing.
- Eye-Safe Wavelength (~1.5 µm): Safe for human exposure in many applications.
- Enhanced Pump Absorption: Cr³⁺ sensitizer increases utilization of flashlamp emission spectrum.
- Excellent Optical Quality: Surface flatness < λ/4, wavefront distortion minimized.
- Robust Thermal & Mechanical Properties: Suitable for demanding operational environments.
- Cost-Effective Pumping: Compatible with reliable and inexpensive Xe flashlamp sources.
Applications
- Lidar Systems: Provides eye-safe, coherent laser sources ideal for remote sensing and atmospheric monitoring.
- Range Measurements: Enables precise distance detection with high accuracy and reliability.
- Fiber-Optic Communication: Supports efficient signal transmission near the 1.5 µm low-loss telecom window.
- Laser Surgery: Offers a safe infrared laser source suitable for minimally invasive medical procedures.
Frequently Asked Questions
The applications of Er,Cr,Yb:Glass include lidar, range measurements, fiber-optic communication, and laser surgery.
The features of Er,Cr,Yb:Glass include high laser efficiency, low laser threshold, and safety for human eye. It also has high light conversion.
The optical properties of Er,Cr,Yb:Glass include optical density, concentrations, fluorescence lifetime, and emission wavelength.
Erbium Glass doped with Er3+, Yb3+ and Cr3+ is used as a coherent source in the spectral range near 1.5 μm, which is relatively safe for the human eye and is convenient in many applications, such as lidar and range measurements, fiber-optic communication, and laser surgery.
The polishing specification of Er,Cr,Yb:Glass includes orientation tolerance of < 0.5°, thickness/diameter tolerance of ±0.05 mm, surface flatness of <λ/4@632 nm, and wavefront distortion.