Ho:Cr:Tm:YAG Description
Ho:Cr:Tm:YAG Crystal is a type of laser crystal used in solid-state lasers for various applications, including medical, scientific, and industrial purposes. Depending on the exact composition and the specific laser cavity design, Ho:Cr:Tm:YAG lasers can emit laser light in the infrared (IR) region of the electromagnetic spectrum, which is useful for various applications such as medical procedures (e.g., lithotripsy for kidney stones), remote sensing, and material processing.
Ho:Cr:Tm:YAG Specifications
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Dopant Concentration
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Er: ~50 at%
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Orientation
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<111> or <100> crystalline within 5°
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Wavefront Distortion
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l /8 per inch @ 633 nm
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Extinction Ratio
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>25dB
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Dimension Tolerances
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Rods with diameter: ±0.025 mm , Length: ±0.5 mm
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Surface Quality
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10/5 Scratch / Digper MIL-O-1380A
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Parallelism
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< 10 arc seconds
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Perpendicularity
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< 5 arc minutes
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Flatness
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< l /10 @ 633 nm
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Chamfer
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<0.1 mm @ 45deg.
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Barrel Finish
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50-80 micro-inch (RMS) ,
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AR Coating Reflectivity
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< 0.25%
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Notes:
1. To inquire or order a finished crystal, please provide specifications as listed above. For most applications, we only need to know the following:
1) Nd-dopant concentration; 2) Sizes; 3) Surface quality; 4) Coating.
2. For special requests, please provide a detailed specification for evaluation and fabrication.
Ho:Cr:Tm:YAG Applications
1. Medical Lasers:
· Lithotripsy: Ho:Cr:Tm:YAG lasers are used in medical procedures for lithotripsy, which involves breaking down kidney stones and other urinary tract stones into smaller fragments for easier elimination.
· Ophthalmology: These lasers can be employed for certain eye surgeries, such as the treatment of glaucoma and cataracts.
2. Material Processing:
· Cutting and Welding: Ho:Cr:Tm:YAG lasers can be used for cutting and welding materials like metals and plastics due to their high power and precise control.
· Marking and Engraving: They are employed in industrial applications for marking and engraving materials, including metals, ceramics, and plastics.
3. Scientific Research:
· Spectroscopy: These lasers are valuable tools in scientific research, particularly in the fields of spectroscopy and materials science, where precise control of IR wavelengths is required.
4. Defense and Security:
· Military: Ho:Cr:Tm:YAG lasers can be used in military applications for blinding or disrupting sensors and targeting systems, as they emit in the eye-safe IR region.
· Target Illumination: They can also be used for illuminating targets or providing guidance for various defense systems.
5. Environmental Monitoring:
· LIDAR (Light Detection and Ranging): Ho:Cr:Tm:YAG lasers are used in LIDAR systems for environmental monitoring, atmospheric studies, and mapping applications. They can penetrate various atmospheric conditions and measure the distance, speed, and composition of objects or terrain.
· Gas Sensing: Ho:Cr:Tm:YAG lasers can be employed in gas sensing and monitoring systems for detecting and analyzing gases and pollutants in the atmosphere.
