AgGaS2 & AgGaSe2 Crystal Description
Silver Gallium Sulfide (AgGaS2) and Silver Gallium Selenite (AgGaSe2) crystals have recently attained special interest for middle and deep infrared (IR) applications. due to their large nonlinear optical (NLO) coefficients and high transmission in the IR region.
The phase matching and transmission characteristics of AgGaS2 allow 3-wave interactions in the mid and near IR, AgGaS2 has been used as an efficient NLO crystal for 3 - 10 mm IR output, particularly for OPO devices pumped with Nd: YAG laser, frequency mixing of OPO outputs pumped by Ti: Sapphire or Nd: YAG laser, as well as frequency mixing Nd: YAG laser with dye and Ti: Sapphire or other laser sources. AgGaS2 has also been demonstrated to be an efficient frequency-doubling crystal for infrared radiation such as 10.6 mm output of CO2 lasers.
AgGaS2 & AgGaSe2 Crystal Specification
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Flatness
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l/ 8@633nm
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S/D
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10/5 to MIL-O-13830A
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Parallelism
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20"
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Perpendicularity
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5 arc minutes
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Angle Tolerance
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Δθ<0.5° Δψ 0.5
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Dimension Tolerance
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±0.1mm
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AgGaS2 & AgGaSe2 Crystal Feature
- Strict Quality Control
- Fast Delivery
- Competitive Price and Huge OEM Discount
- Coating, mounting, and re-polishing service
- Free Technical Support
AgGaS2 & AgGaSe2 Crystal Applications
1. Optical Parametric Oscillators (OPOs) and Amplifiers (OPAs):
AgGaS2 and AgGaSe2 crystals are commonly used in optical parametric oscillators and amplifiers.
2. Frequency Conversion:
AgGaS2 and AgGaSe2 crystals can convert infrared (IR) laser light into visible and ultraviolet (UV) light, making them useful in laser-based material processing, medical applications, and scientific experiments.
3. Second-Harmonic Generation (SHG):
These crystals are employed in SHG to produce coherent light at precisely half the original wavelength.
SHG is used in laser sources for fluorescence microscopy, laser displays, and various imaging techniques.
4. Terahertz Generation:
AgGaS2 and AgGaSe2 crystals can also be used to generate terahertz (THz) radiation through difference frequency generation (DFG) processes. THz radiation has applications in imaging, spectroscopy, and security screening.
5. Laser Systems:
These crystals are utilized as components in laser systems for various applications, including telecommunications, environmental monitoring, and military systems.
They can be integrated into solid-state lasers, tunable laser sources, and mode-locked lasers.
6. Nonlinear Optical Studies:
Researchers use AgGaS2 and AgGaSe2 crystals in nonlinear optical studies and experiments to investigate fundamental optical phenomena and quantum optics.
7. Biomedical Imaging:
In biomedical imaging, especially in multiphoton microscopy, these crystals can help generate laser light for deep tissue imaging with high spatial resolution and minimal photodamage.
8. Remote Sensing:
These crystals are used in remote sensing applications, such as LIDAR (Light Detection and Ranging), for atmospheric studies, environmental monitoring, and geological surveys.
9. Defense and Security:
AgGaS2 and AgGaSe2 crystals have applications in defense and security systems, including laser rangefinders, target designators, and countermeasure systems.
AgGaS2 & AgGaSe2 Crystal Packing
AgGaS2 and AgGaSe2 crystals are packaged in moisture-resistant, airtight containers with desiccants to protect their optical properties and ensure safe transport and storage.
AgGaS2 & AgGaSe2 Crystal FAQs
Q1 What are the key applications of AgGaS2 and AgGaSe2 crystals?
These crystals are ideal for:
- Infrared laser generation and frequency conversion
- Optical parametric oscillators (OPOs)
- Second-harmonic generation (SHG) and sum-frequency generation (SFG)
- Mid-infrared (mid-IR) spectroscopy
- Nonlinear optical research and experiments
Q2 What is the difference between AgGaS2 and AgGaSe2 crystals?
The main difference lies in their transparency range and optical properties:
- AgGaS2 (AGS): Transparent from 0.5 µm to 13.2 µm, suitable for near-IR to mid-IR applications.
- AgGaSe2 (AGSe): Transparent from 0.7 µm to 18 µm, optimized for longer infrared wavelengths.
Q3 How are AgGaS2 and AgGaSe2 crystals used in infrared laser systems?
These crystals are commonly used for frequency conversion of solid-state lasers (e.g., Nd:YAG or Er:YAG lasers) to generate mid-IR wavelengths, essential for medical, military, and scientific applications.
