Cr⁴⁺:YAG Q-Switch Crystal | Passive Q-Switch 1064 nm

Cr⁴⁺:YAG (Chromium-doped Yttrium Aluminum Garnet) crystals are widely used as saturable absorbers for passive Q-switching in Nd:YAG and other 1.06 µm solid-state laser systems.
By modulating intracavity losses automatically, Cr⁴⁺:YAG enables short, high-peak-power pulses without external electro-optic components.

Our Cr⁴⁺:YAG crystals are laser-grade, offering excellent optical uniformity, stable absorption characteristics, and high damage threshold for long-term reliable operation.

Key Features

• Passive Q-switching at 1064 nm
• No external driver or electronics required
• High peak power pulse generation
• High optical damage threshold
• Stable absorption and long service life
• Laser-grade optical polishing
• Multiple initial transmission options available

Typical Specifications

• Material: Cr⁴⁺:Y₃Al₅O₁₂ (Cr⁴⁺:YAG)
• Function: Saturable absorber / passive Q-switch
• Operating wavelength: 1040–1100 nm (optimized for 1064 nm)
• Initial transmission (T₀): 70%, 80%, 90%, 95% (custom available)
• Crystal orientation: ⟨111⟩
• Surface quality: 10/5 or 20/10 scratch-dig
• Flatness: λ/10 – λ/4
• Polishing: Double-side optical polish
• Coatings: AR @ 1064 nm (optional)

Applications

• Passive Q-switched Nd:YAG lasers
• Compact DPSS laser modules
• Range finders and LIDAR systems
• Marking and micro-processing lasers
• Scientific and industrial laser sources

Customization & Fabrication

We offer:

• Custom crystal dimensions and thickness
• Adjustable initial transmission (T₀)
• AR coatings at 1064 nm
• Precision cutting and polishing
• OEM and bulk orders

Please contact us with your laser cavity parameters for optimal selection.

Research & Industry Support

• Academic and university discounts available
• Tax-exempt purchasing supported
• Technical consultation for cavity design

Shipping & Lead Time

• In-stock items: Ship within 1–2 business days
• Custom orders: Typical lead time 2–3 weeks
• Secure optical packaging for laser components