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Erbium and Ytterbium co-doped phosphate glass/Er Yb Glass for LD pumped lasers

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Description

Erbium and Ytterbium co-doped phosphate glass/Er:Yb Glass for LD pumped lasers
Er Yb Glass is Erbium and Ytterbium co-doped phosphate glass, Er3 + / Yb3 + Co doped phosphate glass – as LD pumped 1540nm eye safety radiation source, it can emit 1540nm eye safety laser radiation directly used in laser rangefinder and telecommunications 1540um, Er3 + / Yb3 + Co doped phosphate glass laser, as a wavelength laser safe for human eyes, has attracted much attention because of its compactness and low cost (such as laser generation and signal amplification), because the wavelength of 1540nm is just located in the position of eye safety and optical fiber communication window. 1540 nm laser has been used in rangefinder, radar and target recognition. Er3 + / Yb3 + Co doped phosphate glass and passive Q-switched cobalt spinel were used to obtain 1540 nm pulsed solid-state laser.

The Er3 + emission transition occurs in the wavelength range corresponding to 4I13 / 2 → 4i15 / 2. However, Er3 + absorption itself is too weak to pump directly, so energy transfer is required. The most effective is the Yb3 + ion absorbed by 2F7 / 2 → 2F5 / 2 transition, then the energy is transferred to 4i11 / 2 Er3 + level and the fast non radiative transition to Er3 + 4I13 / 2 level, so as to emit the expected fluorescence. Er, Yb: glass laser with radiation output of 1540 nm does not need to add other components.

Feature
Absorption bandwidth
Long fluorescence lifetime
High optical quality
Eye safety
High slope efficiency

Specification
● laser wavelength: 1535nm
● concentration: 0.25cm ³～ 3cm ³
● cross section of stimulated emission (10-20 cm) ²）： zero point eight
● fluorescence lifetime (MS): 9.4-9.8

Processing index

orientation tolerances	< 0.5°
Thickness / diameter tolerance	±0.05 mm
Surface flatness	<λ/8@632 nm
Wavefront distortion	<λ/4@632 nm
surface quality	5-Oct
Parallelism	10〞
Verticality	15ˊ
Luminous aperture	>90%
Chamfer	<0.1×45°
Maximum size	dia (3-12.7)×（3-150）mm2

Application
Optical communication: erbium glass fiber amplifier
Range and lidar: 1535 eye safety laser

Request: Erbium Laser Glass - Ordering
Size/Doping: OEM ordered using the following,
W & H: Block Width & Height (mm)
L: Block Length (mm)
D: Doping (%)
F: Finish (P=Plane, W=Wedge, B=Brewster)
C: Coating Requirements

Absorption and emission spectra

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