Blink-HS: high speed laser power and energy sensor head: 500 MSamples/s
LaserPoint's BLINK-HS laser sensors (and associated meter) are based on a proprietary technology on thermopile design that makes this product the fastest laser power and energy sensor currently available. This technology allows combining the high response speed of a photodiode with the broadband and high power operation of a thermopile.
Laser applications requiring high speed measurements can take advantage of the sub-microsecond response time. This BLINK-HS feature allows
- measuring the energy of each pulse emitted by laser sources with
- repetition rates up to 1 MHz,
- pulse durations down to femtoseconds (fs) and
- average power up to 20W,
characteristics that cannot be present all together in pyroelectric, thermopile or photodiode sensors. Moreover, its high damage threshold and efficient water cooling allow withstanding energies up to 10mJ.
Key features of the Blink-HS high speed laser power and energy sensor head:
- 20 W max. laser power measurement
- 10 mJ max. laser energy measurement
- measurement active area: 14x14 mm
- 500 MSamples/s sampling rate
BLINKHS can be deployed by laser manufactures to detect fast instabilities in laser sources as well as by system integrators to monitor fast processes in production lines. Combining all advantages present in photodiodes, pyroelectric and thermal detectors, BLINKHS is a very versatile product, suited to measure most of the laser sources commercially available, from ultrashort pulse (ultrafast lasers: picoseconds and femtoseconds) to CW lasers. High speed electronics is also available with a sampling rate up to 500 Msample/s to provide a precise energy measurement of each single pulse.
As an example of the capabilities of the LPT-Blink-HS, we show the rise in the energy emitted by a laser (800fs, 1.8MHz, 1080nm, 17W) at start.
The following screenshot shows the energy emitted during 1ms, the initial one after laser start.
Moreover, the APP "Pulse Controller" integrates the missing pulses detection i.e. pulses that have no sufficient energy to start the measurement; or low energy pulse detection i.e. pulses that have a detected energy below the user specified threshold. In the following figure you can observe this functionality as measured by the trace of the oscilloscope of the single pulse train (red) and also the TTL Alarm output (yellow).
Chart of models: Blink-HS high speed laser power and energy sensor head
|Power range||1 mW - 5 W||1 mW - 8 W||1 mW - 15 W||1 mW - 20 W|
|Power calibration uncertainty||± 5%|
|Spatial uniformity (1)||± 5%|
|Energy range||1 uJ - 10 mJ|
|Max repetition rate||1 MHz|
|Energy resolution||0.25 uJ|
|Calibration Uncertainty||± 5%|
|Aperture||14 x 14 mm|
|Absorber Spectral Range||0.2 - 11 µm|
|Calibration Spectral Range||0,355 / 0,532 / 1,07 / 10,6 um (a, b)|
|Max. Power Density (2)||0,1 KW/cm2|
|Max. Energy Density (3)||35 mJ/cm2|
|Cooling||Convection (c)||Convection (c)||Forced air (d)||Water (e)|
|Weight||130 g||240 g||380 g||170 g|
|Dimensions||60x60x16.5 mm||60x60x41.6 mm||60x60x66 mm||60x60x25.7 mm|
|Max Operating Temperature||60°C||60°C||40°C||na|
(0) 15W max 2 sec exposure, max 20% duty cycle
(1) 3mm beam diameter, scanning 80% of active area
(2) Damage thresholds depend on power level.
(3) Single shot
(a) @ 10.6 µm sensor reflectivity 70%
(b) Others wavelength on request
(c) Recommended ambient temperature: 10 -30 °C
(d) Recommended ambient temperature: 10 -35 °C
(e) Water min. 1 l/min, max. 4 l/min (@ 10 - 25 °C); admissible rate of water temperature variation < 1 °C/min
The Blink-HS sensors are developed to work together with the high speed laser power and energy meter LPT-HSM-1000
Meet here all our laser power and energy sensors, splitted into their two main groups:
- standard laser power and energy sensors-meters
- BLINK: high speed and fast response laser sensors, for ultrafast lasers (picoseconds, femtoseconds).