L50(250)A-BB-50 Medium Power Thermal Sensors for General Purpose

L50(250)A-BB-50

產品型號：L50(250)A-BB-50
產品說明：

The L50(250)A-BB-50 is a general purpose thermal power/energy laser measurement sensor with a 50mm aperture. It can measure from 300mW to 50W continuously and to 250W intermittently. It can measure energy from 100mJ to 4000J. It has the spectrally flat broadband coating and covers the spectral range from 0.19 to 20µm. The sensor comes with a standard 1.5 meter cable for connecting to a meter or PC interface.

價格(NTD)：$0

產品說明

Model Use	L50(250)A-BB-50 General purpose
Absorber Type	Broadband
Spectral Range	0.19 - 20µm
Absorption	~88%
Aperture	Ø50mm
Power Mode
Power Range	300mW - 250W (a)
Maximum Intermittent Power	250W for 1.5min 150W for 3min 80W for 6min 50W continuous (a)
Power Scales	250W / 30W
Power Noise Level	15mW
Maximum Average Power Density	10kW/cm² at 250W 17kW/cm² at 50W
Response Time with Meter (0-95%) typ.	2.5 s
Calibration Uncertainty	±1.9%
Power Accuracy	±3%
Linearity with Power	±1%
Beam Size Dependence	<1% for beams up to 35mm diameter
Energy Mode
Energy Range	100mJ - 4000J
Energy Scales	4kJ / 400J / 40J / 4J
Minimum Energy	100mJ
Maximum Energy Density J/cm²
<100ns	0.3
1µs	0.4
0.5ms	5
2ms	10
10ms	30
>300ms	See below (a), (f)
Cooling	convection / ballistic
Fiber Adapters Available	ST, FC, SMA, SC
Weight	0.6kg
Part number	7Z02796
Notes: (a) Long pulses (0.5 – 4s) can be used to measure power of high power lasers by measuring the energy of a short exposure. The StarBright, Juno, Juno+ and Centauri meters have a Pulsed Power mode where the user may specify the pulse width and get a reading directly in units of power for this short exposure energy measurement. (b) Above 1.1μm there is an additional calibration uncertainty of up to 2% (c) Calibrated for 0.25 – 2μm, 10.6μm (d) For 10-50Hz, derate as follows: Wavelength Derate to value 1064nm Not derated 532nm Not derated 355nm 70% of stated value 266nm 15% of stated value 193nm 10% of stated value (e) Damage threshold 1.5J/cm2 for wavelengths <500nm (f) Recommended exposure times and 1/e2 Gaussian beam diameters for very long pulses. Total energy for a series of measurements should not exceed 20kJ. Cooling down time before another 20kJ series, 10min. Recommended time between shots 12s. Laser Power W Recommended Exposure s Number of shots before cooling down Min 1/e² beam dia. mm 500 2 20 14 1000 1 20 14 2000 1 10 21 4000 1 5 32 5000 1 4 NA 10000 0.3 4 NA