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1.1.3.2 Low Power BeamTrack-Power / Position / Size Sensors

100μW to 10W

Features

 ? All the features of standard power sensors plus...

 ? Accurate tracking of beam position to 

 fractions of a mm

 ? Monitoring of the laser beam size

3A-QUAD / 3A-P-QUAD 

3A-QUAD / 3A-P-QUAD 

10A-PPS

10A-PPS

Model 3A-QUAD (a) 3A-P-QUAD (a) 10A-PPS (a)

Use General purpose Short pulses Low power

Functions Power / Energy / Position Power / Energy / Position Power / Energy / Position / Size

Absorber Type Broadband P type Broadband

Spectral Range μm 0.19 - 20 0.15 - 8 0.19 - 20

Aperture mm ?9.5mm ?12mm ?16mm

Power Mode

Power Range 100μW - 3W 160μW - 3W 20mW - 10W

Power Scales 3W to 300μW 3W to 300μW 10W / 5W / 0.5W

Power Noise Level 5μW 10μW 1mW

Thermal Drift (30min)% 10 - 40μW (b) 10 - 40 μW (b) NA

Maximum Average Power Density kW/cm2 1 0.05 28

Response Time with Meter (0-95%) typ. s 1.8 2.5 0.8

Power Accuracy +/-% (f ) 3 3 3

Linearity with Power +/-% 1 1 1

Energy Mode

Energy Range 20μJ - 2J 30μJ - 2J 6mJ - 2J

Energy Scales 2J to 200μJ 2J to 200μJ 2J / 200mJ

Minimum Energy 20μJ 30μJ 6mJ

Maximum Energy Density J/cm2

<100ns 0.3 1(e) 0.3

0.5ms 1 1(e) 2

2ms 2 1(e) 2

10ms 4 1(e) 2

Beam Tracking Mode

Position

Beam Position Accuracy mm (c) 0.15 0.15 0.15

Beam Position Resolution mm 0.02 0.02 0.02

Min Power for Position Measurement 300μW 400μW 50mW

Size (d)

Size Accuracy mm NA NA ±(5%+50μm) for centered beam

Size Range mm (4σ beam diameter) NA NA 1.5 - 10

Min Power for Size Measurement NA NA 50mW

Cooling convection convection convection 

Weight kg 0.3 0.3 0.3

Fiber Adapter Available (see page 63) ST, FC, SMA, SC ST, FC, SMA, SC ST, FC, SMA, SC

Part number 7Z07934 7Z07935 7Z07904

Notes: (a) The BeamTrack features are supported by StarBright, StarLite, Nova II ��nd Vega meters, Juno interface ��nd StarLab application.

Notes: (b) Depending on room airflow ��nd temperature variations.

Notes: (c) For position within inner 30% of aperture. 

Notes: (d) Assumes laser beam with Gaussian (TEM00) distribution. For other modes, size measurement is relative. 

Notes: (e) For P type ��nd shorter wavelengths derate maximum energy density as follows: Wavelength Derate to value

1064nm not derated

532nm not derated

355nm 40% of stated value 

266nm 10% of stated value

193nm 10% of stated value

Notes: (f ) The 3A-QUAD has a relatively large spectral variation in absorption ��nd has a calibrated spectral curve at all wavelengths in its spectral range to the above specified accuracy. 

Nova, Orion ��nd LaserStar meters do not support this feature ��nd when used with those meters, the accuracy will be ±3% as above for 532nm, 905nm, 1064nm ��nd 10.6μm but there will 

be an additional error of up to 3% at other wavelengths in the spectral range 190 – 3000nm.