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Beam Divergence

Coherent BioRay Operator's Manual

Coherent BioRay Operator's Manual

…end of the fiber
cable. Position the sensor close enough to the photodiode
sensor so that the divergent beam is not clipped.
Alignment
Setscrews
Connector
Ferrule
SMA
Connector
Photodiode
Sensor
Active Diameter (D)
Divergent
Beam

Properties-of-Structured-Light-Application-Note.pdf

Properties-of-Structured-Light-Application-Note.pdf

…3
Divergence
Since Gaussian beams follow the
diffractive principles, we cannot achieve
a perfectly collimated beam and the
divergence of the beam is dependent
on the waist size that is set by the
optical system.
Far field divergence of a laser beam
can…

COHR Genesis CX355STM Compact DS 1115revB 1.pdf

COHR Genesis CX355STM Compact DS 1115revB 1.pdf

Beam Quality (M2) <1.2
Beam Circularity2 1.0 ±0.1
Beam Waist Diameter (mm)(FW, 1/e2)
Horizontal 0.975 ±0.2
Vertical 0.915 ±0.2
Beam Divergence (mrad)(FW, 1/e2) <1.2
Beam Waist Location3 (mm) ±325
Beam Pointing Stability4 (rad/°C) <6
Horizontal Beam

RAPID-FX-Data-Sheet-06-17-15.pdf

RAPID-FX-Data-Sheet-06-17-15.pdf


Beam Quality M2 (x,y)(4) <1.4
Beam Diameter 2w (mm )(x,y)(at 1 m from laser output) 5.0 ±0.5
Beam Divergence (mrad) <1
Beam Waist Astigmatism <0.25
Beam Waist Asymmetry 1.00 ±0.15
Polarization Ratio >100:1
Polarization Direction Vertical ±3°
Beam

COHR Fidelity-2 DS 0618 4.pdf

COHR Fidelity-2 DS 0618 4.pdf

…Stability3 (%) ±0.5
Repetition Rate (MHz) (factory set) 70 ±2
M2 (average of X&Y) <1.2
Beam Diameter4 (mm) 1.2 ±0.2
Beam Divergence (mrad) <1.6
Beam Circularity5 0.9 to 1.1
Astigmatism (%) <10
Polarization Horizontal
Group Delay Dispersion (GDD)…

CP633 40 70mW Jan 2019.pdf

CP633 40 70mW Jan 2019.pdf

…Threshold Current Ith 64 80 mA Operating Current Iop 160 210 mA Operating Voltage Vop 2.8 3.0 V Beam Divergence, Perpendicular (FWHM) Qv <2 mrad Beam Divergence, Parallel (FWHM) Qv <2 mrad Beam Size 0.6 x 0.9 mm Differential Efficiency DE (dP/dI) 0.7 mW/mA Operating Temperature2 Top 35 oC Storage…

CP785nm 175 225mW Feb-2019-1.pdf

CP785nm 175 225mW Feb-2019-1.pdf

…Operating Voltage Vop 2 2.8 V Beam Divergence, Perpendicular (FWHM) Qv 0.2 mrad Beam Divergence, Parallel (FWHM) Qh 0.1 mrad Differential Efficiency DE (dP/dI) 0.6 mW/mA Operating Temperature2 Top 0 35 oC Storage Temperature2 Ts -10 60 oC Polarization 100:1 Collimated Beam Diameter 0.25x 0.7 mm 1All…

COHR AVIA LX UV DS 0818 3.pdf

COHR AVIA LX UV DS 0818 3.pdf

…Rate Single-shot to 300 kHz
Pulse Width (ns) <25 at 50 kHz
Spatial Mode TEM00, M2 <1.3
Beam Divergence (mrad) <0.5
Beam Waist Diameter (mm, 1/e2) 1.5 ±10%
Beam Circularity (%) >90
Polarization Ratio >100:1
Polarization Direction Vertical
Pulse…

COHR StarFiber DS 0218 6.pdf

COHR StarFiber DS 0218 6.pdf


Pulse Width (µs) (FWHM) 0.5 to CW 0.5 to CW 1.0 to CW 1.0 to CW
Beam Diameter (mm) (1/e2) 5.0 ±0.5 5.0 ±0.5 Diverging Diverging
Beam Divergence (mrad) (full angle) Collimated Collimated <150 <140
Beam Quality (M2) <1.1
Free Fiber Length (m) 4.5
Fiber Connection…

COHR StarFiber DS 0319 1.pdf

COHR StarFiber DS 0319 1.pdf


Pulse Width (µs) (FWHM) 0.5 to CW 0.5 to CW 1.0 to CW 1.0 to CW
Beam Diameter (mm) (1/e2) 5.0 ±0.5 5.0 ±0.5 Diverging Diverging
Beam Divergence (mrad) (full angle) Collimated Collimated <150 <140
Beam Quality (M2) <1.1
Free Fiber Length (m) 4.5
Fiber Connection…

DIAMOND C-20 and C-30 Air-Cooled OEM Lasers Preinstallation Manual, Rev. AE

DIAMOND C-20 and C-30 Air-Cooled OEM Lasers Preinstallation Manual, Rev. AE


4.9 Beam Propagation
The true waveguide structure of the C-20 and C-30 delivers a 1.8 mm 1/e2
diameter beam with a 7.5 mrad 1/e2 full angle divergence. The typical
beam diameter as a function of distance from the laser is shown in
Figure 4-4.
Figure 4-4. Beam Diameter…

DIAMOND C-20 and C-30 Liquid-Cooled OEM Lasers Preinstallation Manual, Rev. AF

DIAMOND C-20 and C-30 Liquid-Cooled OEM Lasers Preinstallation Manual, Rev. AF


4.8 Beam Propagation
The true waveguide structure of the C-20 and C-30 delivers a 1.8 mm 1/e2
diameter beam with a 7.5 mrad 1/e2 full angle divergence. The typical
beam diameter as a function of distance from the laser is shown in
Figure 4-7.
Figure 4-7. Beam Diameter…