Er Yb Glass (Erbium glass) Description
Er3+/Yb3+ co-doped phosphate glass-as an LD-pumped 1540nm eye-safe radiation source, it can emit 1540nm eye-safe laser radiation directly used in laser rangefinders and telecommunication communications.
1540um, Er3+/Yb3+ co-doped phosphate glass laser, as a wavelength laser that is safe for human eyes, has attracted much attention due to its compactness and low cost (such as laser generation and signal amplification), because the wavelength of 1540nm is just at eye-safe And the position of the optical fiber communication window. The 1540nm laser has been used in rangefinders, radars, and target recognition. Er3+/Yb3+ co-doped phosphate glass and passive Q-switched cobalt spinel together obtain 1540nm pulsed solid-state laser.
The Er3+ emission transition occurs in this wavelength range corresponding to 4I13/2→4I15/2. However, the Er3+ absorption itself is too weak to be directly pumped, so energy transfer is required. The most effective is the Yb3+ ion absorbed by the transition from 2F7/2→2F5/2, followed by energy transfer to the 4I11/2 Er3+ energy level and rapid non-radiative transition to the Er3+ 4I13/2 energy level, thereby emitting the expected fluorescence. Er, Yb: The glass laser with a radiation output of 1540 nm does not require additional components.
Er Yb Glass (Erbium glass) Specifications
Laser Specification
|
|
EAT14
|
WM4
|
|
Cross section of stimulated emission (10-20cm2)
|
0.8
|
0.75
|
|
Fluorescence lifetime (milliseconds)*
|
7.7-8.0
|
7.7-8.2
|
|
Central laser wavelength (nm)
|
1535
|
1535
|
Optical properties
|
|
EAT14
|
WM4
|
|
Refractive index (1535nm)
|
1.524
|
1.528
|
|
Refractive index (d 589.3nm)
|
1.532
|
1.536
|
|
Abbe value
|
66
|
66
|
|
dn/dT (10-6/℃) (20~100℃)
|
-1.72
|
-3
|
Physical Properties
|
|
EAT14
|
WM4
|
|
Transition temperature (℃)
|
556
|
530
|
|
Softening temperature (℃)
|
605
|
573
|
|
Coefficient of linear thermal expansion (10-7/K) (20~100℃)
|
87
|
82
|
|
Coefficient of linear thermal expansion (10-7/K) (100~300℃)
|
95
|
96
|
|
Thermal coefficient of optical path length (10-6/K) (20~100℃)
|
2.9
|
1.4
|
|
Thermal conductivity (25℃) (W/mK)
|
0.7
|
0.7
|
|
Density g/cm3
|
3.06
|
2.83
|
|
Chemical durability (weight loss rate in distilled water at 100°C)
(μg/hr.cm2)
|
52
|
82
|
Spectrum
Er Yb Glass (Erbium glass) Applications
- 1535nm Eye Safety Laser
- Er glass fiber amplifier
- Rangefinder
- Target Recognition
Er Yb Glass (Erbium glass) Packaging
Our Er Yb Glass (Erbium glass) is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
