L40(250)A-LP2-50 Medium Power Thermal Sensors for Long Pulse Lasers

L40(250)A-LP2-50

產品型號：L40(250)A-LP2-50
產品說明：

The L40(250)A-LP2-50 is a thermal power/energy laser measurement sensor for high power density and long pulse lasers. It has a 50mm aperture and can measure from 300mW to 40W continuously and to 250W intermittently. It can measure energy from 100mJ to 10,000J. The sensor is able to measure high power lasers of up to 10kW by measuring the energy of 0.3 - 2s exposure to the laser. The high damage threshold LP2 absorber covers the spectral range from 0.25 to 2.2µm and 2.94µm. 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	L40(250)A-LP2-50 CW and Long Pulse Lasers
Absorber Type	LP2
Spectral Range	0.25 - 2.2µm, 2.94µm
Absorption	>94% from 0.25 to 1.1μm
Aperture	Ø50mm
Power Mode
Power Range	300mW - 250W (b)
Maximum Intermittent Power	250W for 1.5min
	150W for 3min
	80W for 6min
	40W continuous (b)
Power Scales	250W / 30W
Power Noise Level	15mW
Maximum Average Power Density	20kW/cm² at 250W
Maximum Average Power Density	50kW/cm² at 40W
Response Time with Meter (0-95%) typ.	2.5 s
Calibration Uncertainty	±1.9%
Power Accuracy	±3% (a)
Linearity with Power	±1%
Beam Size Dependence	<1% for beams up to 35mm diameter
Max Beam Diameter for Gaussian beam	Ø35mm for up to 30deg incidence
Energy Mode
Energy Range	100mJ - 10,000J
Energy Scales	10kJ / 1kJ / 100J / 10J
Energy Accuracy	±5% 700 – 1100nm (a, b)
Maximum Exposure Before Cooling Down is Necessary
Minimum Energy	100mJ
<100ns	0.1
1µs	0.9
0.5ms	50
2ms	130
10ms	400
>300ms	See below (b, c)
Pulsed Power Mode
Exposure Time For Pulsed Power Mode	0.3s - 2s
Waiting Time for Next Measurement	12s
Maximum Energy Density J/cm²	20kJ (e.g. 4 shots of 5000Wx1s). Cooling down time before another 20kJ series, 10min.
Recommended Exposure Times and Beam Diameters	Laser Power W	Recommended Exposure s	Min 1/e²beam dia. Mm
	500	2	9
	1000	1	9
	2000	1	12
	4000	1	16
	5000	1	18
	10000	0.3	22
Compatible Meter/PC interface	Centauri, StarBright, Juno/Juno+ with StarLab
Cooling	convection / ballistic
Fiber Adapters Available	ST, FC, SMA, SC
Weight	0.8kg
Part number	7Z02794
Notes: (a) Above 1.1μm there is an additional calibration uncertainty of up to 2% except at the additional calibration point of 2.94μm where the additional uncertainty is 1%. (b) 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. (c) Calibrated for 900 – 1100nm (d) At large angles of incidence, the position the beam hits the absorber should be offset into the direction of incidence by 5-10mm for correct reading and at 20deg incidence the reading will be 5% lower and at 30deg incidence 10% lower.