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Spectrum Transmission Curve

Spectrum transmission curves for AgGaGeS4 Crystal can be provided upon request, showcasing its transmission efficiency across the 0.5–11.5 µm range.

POC-AgGaGeS4 Crystal Spectrum Absorption and emission Curve

Coating Specification

  • Anti-Reflective (AR) Coating: Optimized for mid-IR wavelengths with a low reflectance of <0.2%.
  • Customized Coatings: Other coatings (e.g., BBAR, HR) are available upon request based on specific application needs.
  • Adhesion Test: Compliant with MIL-C-675C military standards, an adhesion test involved applying a tape that meets LT-90 specifications onto the lens film layer. The tape was affixed fully and then removed vertically. This procedure was performed three times, resulting in no blistering or peeling.
  • Temperature Test: In line with MIL-C-675C specifications, test pieces were subjected to temperatures of -62±1℃ and 71±1℃. After maintaining them at room temperature (16℃~32℃) for two hours, the adhesion test was repeated, confirming no film detachment.
  • Abrasion Resistance Test: Conforming to MIL-C-675C and CCC-C-440 standards, the abrasion resistance test involved a gauze tester applying a minimum force of 1.0 lbs (0.45 kg) to the film. This was repeated 25 times with gauze widths of 1/4 inch (6.4mm) and 3/8 inch (9.5mm), ensuring no damage occurred to the film surface.
  • Humidity Test: Under MIL-C-675C criteria, the test piece was placed in a controlled temperature and humidity chamber set to 49 ±2℃ and 95%~100% humidity for 24 hours. The film remained intact, with no peeling, scratches, or other defects.
  • Solvent and Cleaning Testing: Following MIL-C-675C specifications, test pieces were exposed to room temperature conditions (16℃~32℃) and tested with acetone and alcohol for at least 10 minutes each. After air drying and subsequent cleaning with a cotton cloth soaked in alcohol, the film surface showed no signs of peeling or scratches.
  • Salt Spray Test: After 100 hours in a 35°C environment with a 5% saltwater concentration, the film showed no signs of damage.
Product CodeDimensions (mm)Coating TypeApplicationPrice (USD)
AGGS-1010-AR10 × 10 × 2AR CoatingMid-IR Laser SystemsRequest
AGGS-2020-AR20 × 20 × 5AR CoatingSpectroscopy ApplicationsRequest
CustomCustom SizesCustomizedTailored for Specific NeedsRequest

POC-OC-122416-AgGaGeS4 Crystal

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AgGaGeS4- AGGS Crystal

POC-OC-122416-AgGaGeS4 Crystal

  • Wide transmission range: 0.5 – 11.5 µm.
  • Low absorption coefficient: <0.05 cm⁻¹ at 1064 nm.
  • High nonlinear coefficient: d31 = 15 pm/V.
  • High laser damage threshold: >1.2 J/cm² at 1064 nm.
  • Ideal for high-power mid-IR tunable laser applications.

Customizable Components Available for This Material to Meet Your Specific Needs!

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General Description

AgGaGeS4 Crystal is a cutting-edge mid-IR nonlinear optical crystal with excellent transmission properties, low absorption coefficients, and a high laser damage threshold. Its wide transparency range (0.5–11.5 µm) and nonlinear optical coefficients make it a superior alternative to traditional crystals in mid-IR laser systems. The material is particularly suitable for Nd:YAG laser-pumped systems and high-power mid-IR parametric oscillators. AgGaGeS4 crystals are available in annealed and as-grown forms, optimized for specific applications in infrared optics

General Applications and Examples

  1. Mid-Infrared Optical Systems: AgGaGeS4 is utilized in mid-IR tunable laser systems for applications like spectroscopy, medical diagnostics, and material processing. Its wide transparency range enables high-efficiency frequency conversion in mid-IR regions.
  2. High-Power Lasers: With a high nonlinear coefficient and laser damage threshold, AgGaGeS4 supports high-power systems, including parametric oscillators and amplifiers.
  3. Laser Pumped Systems: The crystal is optimized for 1.06 µm Nd:YAG laser-pumped applications and can also be pumped with 0.8 µm Ti:Sapphire lasers, delivering efficient mid-IR outputs.
  4. Spectroscopy and Remote Sensing: The broad transparency range and low absorption coefficients make AgGaGeS4 a reliable choice for infrared spectroscopy, allowing precise chemical analysis and environmental monitoring.
  5. Industrial Applications: Common in laser cutting, welding, and mid-IR imaging systems, AgGaGeS4 ensures durability and efficiency in harsh industrial environments.

Chemical and Structural Properties

PropertyValue
Chemical FormulaAgGaGeS4
Crystal StructureOrthorhombic
Lattice Parametersa = 1.05 nm, b = 0.76 nm
Density4.5 g/cm³
Mohs Hardness3
Melting Point830 °C
Thermal Expansion Coefficientsαa = 7.8 × 10⁻⁶/K, αb = 8.1 × 10⁻⁶/K

Optical and Nonlinear Optical Properties

PropertyValue
Transparency Range0.5 – 11.5 µm
Absorption Coefficient<0.05 cm⁻¹ at 1064 nm
Nonlinear Coefficient (d31)15 pm/V
Refractive Indicesno = 2.56, ne = 2.73
Damage Threshold>1.2 J/cm² at 1064 nm

Standard Fabrication Specification

SpecificationValue
Dimension Tolerance (mm)±0.1
Surface Flatnessλ/8 @ 633 nm
Surface Quality (Scratch/Dig)20/10 to MIL-PRF-13830B
Parallelism<20 arc seconds
Perpendicularity≤15 arc minutes
Clear Aperture≥90% of the diameter
CoatingsAR coatings available
Laser Damage Threshold>1.2 J/cm² at 1064 nm

Spectrum Transmission Curve

Spectrum transmission curves for AgGaGeS4 Crystal can be provided upon request, showcasing its transmission efficiency across the 0.5–11.5 µm range.

POC-AgGaGeS4 Crystal Spectrum Absorption and emission Curve

Coating Specification

  • Anti-Reflective (AR) Coating: Optimized for mid-IR wavelengths with a low reflectance of <0.2%.
  • Customized Coatings: Other coatings (e.g., BBAR, HR) are available upon request based on specific application needs.
  • Adhesion Test: Compliant with MIL-C-675C military standards, an adhesion test involved applying a tape that meets LT-90 specifications onto the lens film layer. The tape was affixed fully and then removed vertically. This procedure was performed three times, resulting in no blistering or peeling.
  • Temperature Test: In line with MIL-C-675C specifications, test pieces were subjected to temperatures of -62±1℃ and 71±1℃. After maintaining them at room temperature (16℃~32℃) for two hours, the adhesion test was repeated, confirming no film detachment.
  • Abrasion Resistance Test: Conforming to MIL-C-675C and CCC-C-440 standards, the abrasion resistance test involved a gauze tester applying a minimum force of 1.0 lbs (0.45 kg) to the film. This was repeated 25 times with gauze widths of 1/4 inch (6.4mm) and 3/8 inch (9.5mm), ensuring no damage occurred to the film surface.
  • Humidity Test: Under MIL-C-675C criteria, the test piece was placed in a controlled temperature and humidity chamber set to 49 ±2℃ and 95%~100% humidity for 24 hours. The film remained intact, with no peeling, scratches, or other defects.
  • Solvent and Cleaning Testing: Following MIL-C-675C specifications, test pieces were exposed to room temperature conditions (16℃~32℃) and tested with acetone and alcohol for at least 10 minutes each. After air drying and subsequent cleaning with a cotton cloth soaked in alcohol, the film surface showed no signs of peeling or scratches.
  • Salt Spray Test: After 100 hours in a 35°C environment with a 5% saltwater concentration, the film showed no signs of damage.
Product CodeDimensions (mm)Coating TypeApplicationPrice (USD)
AGGS-1010-AR10 × 10 × 2AR CoatingMid-IR Laser SystemsRequest
AGGS-2020-AR20 × 20 × 5AR CoatingSpectroscopy ApplicationsRequest
CustomCustom SizesCustomizedTailored for Specific NeedsRequest

POC-OC-122416-AgGaGeS4 Crystal

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