- Solid State Laser
- Semiconductor Laser
- DPSS laser
- Gas Laser
- Fiber Laser
- Fiber Coupled Laser(MM)
- Fiber Coupled Laser(SM)
- Ultrafast laser
- Femtosecond Laser
- Picosecond Laser
- Pulsed Laser
- Q-switched Laser
- Raman Laser
- Narrow Linewidth Fiber Laser
- Wavelength Tunable Laser
- Laser Diode
- Laser Module
- Pigtailed Laser
- DFB Laser
- DBR Laser
- SLED Laser
- VCSEL Laser
Yb:CALGO – Laser Crystal – Gain Medium – Customized products
Yb:CALGO crystal product, also known as ytterbium calcium aluminum gadolinium oxide crystal, with the chemical formula of Yb3+:CaGdAlO4. It is a laser gain crystal with good comprehensive performance.
The Yb-doped crystal is used by calgo for high-power and ultra-short (femtosecond) lasers. It shows that the Yb-doped CaGdAlO4 crystal has an excellent performance in producing high-power and ultra-short laser pulses.
This crystal has remarkable thermal, spectroscopic, and mechanical properties and can efficiently and safely generate short-duration continuous wave radiation and ultrafast pulses. More specifically, its excellent thermo optical characteristics and high conversion efficiency allow high-power operation. Its high nonlinear coefficient helps optimize the research of mode-locked lasers.
In addition, its ultra-wide and flat-top emission band is conducive to generating complex structured light with excellent adjustability.
Note:
$100 is a deposit, not the final price of the product. Please contact us for price if needed.
Main Characteristics of Yb: CALGO:
The high absorption coefficient at 979 nm
High excited emission cross-section
Low laser threshold
Extremely low quantum defects
A wide emission spectrum of 994 – 1050 nm
The high slope efficiency of diode pumping
It has recently been found that Yb3+:CaGdAlO4 is very interesting for developing diode-pumped short-pulse mode-locked lasers.
Compared with Ti: sapphire crystal (since the early 1990s, the ultrashort laser system developed by using chirped pulse amplification technology can produce very short and powerful pulses), Yb: CALGO can directly pump semiconductor lasers (green laser pumped Ti: sapphire crystal) with very high efficiency and high power.
Features of Yb: CALGO:
High thermal conductivity
Big gain bandwidth
Broad and smooth launch of bandwidth
Low temperature gradient refractive index
High power InGaAs laser diode cover absorption band
Material Specifications
| Doping Concentration | 1-10% |
| Parallelism | 10〞 |
| Vertical | 10ˊ |
| Surface Quality | 20/10 |
| Surface Flatness | <λ/10@632.8nm |
| Clear Aperture | >90% |
| Chamfering | 0.1mm@45° |
| Thickness/Diameter Tolerance | ±0.05 mm |
Physical and Chemical Properties
| Chemical Formula | Yb:CaGdAlO4 (Yb:CALGO) |
| Crystal Structure | Tetragonal Crystal SystemK2NiF4 Type Structure |
| Melting Point | 1840°C |
| Thermal Conductivity/（W·m-1·K-1） | 11.4(Without Doping) |
| 6.3(2% Yb:CALGO) | |
| 5(5% Yb:CALGO) | |
| Thermal Shock Resistance（W.m-1 / 2） | >4.5 |
| Thermal Expansion Rate/（10-6·K-1） | 35 |
Optical and Spectral Properties
| Transmit Bandwidth*（FWHM）（nm） | 80 |
| Emission Wavelength（nm） | 1018-1052 |
| Minimum Theoretical Duration（fs） | 14 |
| Central Emission Peak（nm） | 1050 |
| Absorption (Usually Pumped)（nm） | 980 |
| Emission Cross Section（10-20 cm2） | 0.8 |
| Fluorescence Lifetime（μs） | 420 |
| σemτ（μscm2） | 336 |
| Quantum Defect | <0.8% |
Main Properties of Laser Materials Involved in Femtosecond Laser Development
| Material | Transmit Bandwidth（FWHM）（nm） | Minimum Theoretical Duration（fs） | Central Emission Peak | Absorption（Usually Pumped）（nm） |
| Yb:YAG | 9 | 124 | 1031 | 942 |
| Yb:Glass | 35 | 31 | 1020 | 975 |
| Yb:GdCOB | 44 | 26 | 1044 | 976 |
| Yb:BOYS | 60 | 18 | 1025 | 975 |
| Yb:KGW | 25 | 44 | 1023 | 981 |
| Yb:KYW | 24 | 46 | 1025 | 981 |
| Yb:SYS | 73 | 16 | 1040 | 979 |
| Yb:YVO4 | 30 | 36 | 1008 | 984 |
| Yb:CaF2 | 30 | 36 | 1047 | 980 |
| Yb:CALGO | 80 | 14 | 1050 | 980 |
Aorption and Emission Spectra
