YCOB Nonlinear Crystal
Description
YCOB (YCa4O(BO3)3, Yttrium Calcium Oxyborate)—Nonlinear crystal considered to have good prospects of UV band optical frequency multiplier
One of the latest technical achievements connected with YCOB is the generation of 2.35-W CW green output (λ = 532 nm) in a 1.2-cm-long crystal (θ = 64.5◦, φ =35.5◦) via inter cavity SHG of a diode-array end-pumped Nd:YVO4 laser (P = 5.6W). Another similar application is THG of NdYVO4 laser radiation. Using the KTP crystal for frequency doubling and a 1.1-cm-longYCOB crystal (θ = 106◦, φ =77.2◦), the authors managed to obtain 124mW of quasi-CW light (pulse repetition frequency 20 kHz) at 355 nm.
YCOB crystal is one of the most widely used nonlinear optical crystals. Its nonlinear optical coefficient is equivalent to that of BBO crystal and LBO crystal. The effective frequency multiplication coefficients of the second and third order reach 2, 8 and 1, 4 times of KDP respectively.The YCOB crystal has the following advantages : large aperture, high damage intensity in femtosecond regime,about2000-2500GW/cm2 wide allowable Angle range and allowable temperature range,small dispersion Angle, shorter growth period by Cz method.At the same time, it has stable physical and chemical properties (non-deliquescent) and good machining properties. Therefore, it is considered to have good application prospects of blue-green light and UV band optical frequency multiplier crystal.
YCOB Nonlinear Crystal
Specifications |
|
|---|---|
| Crystal Type: | BBO (Beta Barium Borate) |
| Phase Mathcing Type: | Not Applicable |
| Mounting: | Unmounted |
| Width: | 18 mm |
| Height: | 18 mm |
| Length: | 2 mm |
| Flatness: | <= Lambda/10 |
| Surface Quality (Scratch-Dig): | 20-10 |
| Thermal Conductivity: | 2.6 W/m/K (||X), 2.33 W/m/K (||Y), 3.1 W/m/K (||Z) |
| Deff (SHG, Type I, 1.0642µm ⇒0.5321µm) : | 0.39 θ =90˚,Φ=35.3˚ (XY plane) |
| Deff (SHG, Type I, 1.0642µm ⇒0.5321µm) : | 0.78 θ =31.7˚,Φ=0˚ (XZ plane) |
| Deff (SHG, Type I, 1.0642µm ⇒0.5321µm) : | 1.36 θ =148.3˚,Φ=0˚ (XZ plane) |
| Deff (SHG, Type I, 1.0642µm ⇒0.5321µm) : | 1.14 θ =65˚,Φ=36.5˚ |
Features
Electric resistivity is high
Temperature acceptance is high
Laser induce damage threshold is high
Less anisotropy
Thermal expansion coefficient is small
Less parametric luminescence
Applications
SHG(second-harmonic generation),THG(third-harmonic generation)
OPO(optical parametric oscillator)
OPA(optical parametric amplification)
OPCPA (optical parametric chirped-pulse amplification)
Piezoelectric acceleration sensors
Pressure sensors
Gas sensors
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Ships from:
China
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On FindLight:
since 2019
Frequently Asked Questions
YCOB crystal has several advantages such as large aperture, high damage intensity in femtosecond regime, wide allowable Angle range and allowable temperature range, small dispersion Angle, shorter growth period by Cz method, stable physical and chemical properties, and good machining properties.
YCOB crystal has several applications such as SHG (second-harmonic generation), THG (third-harmonic generation), OPO (optical parametric oscillator), OPA (optical parametric amplification), OPCPA (optical parametric chirped-pulse amplification), piezoelectric acceleration sensors, pressure sensors, and gas sensors.
The effective frequency multiplication coefficients of the second and third order reach 2, 8 and 1, 4 times of KDP respectively.
One of the latest technical achievements connected with YCOB crystal is the generation of 2.35-W CW green output (λ = 532 nm) in a 1.2-cm-long crystal via inter cavity SHG of a diode-array end-pumped Nd:YVO4 laser. Another similar application is THG of NdYVO4 laser radiation.
YCOB (YCa4O(BO3)3, Yttrium Calcium Oxyborate) is a nonlinear crystal that is considered to have good prospects of UV band optical frequency multiplier.