Nanjing Crylink Photonics Co.,Ltd |
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1535 solid-state eye-safe laser—Ultra compact eye-safe laser for ranging finder
The wavelength of 1535nm is just in the position of the human eye
and the atmospheric window, so it has been widely concerned in the
fields of laser ranging and electronic communication. Er,Yb:glass
lasers are most commonly used for laser rangefinders with a low
pulse repetition rate (less than 10 Hz). Our eye-safe laser have
already used in ranging finder and its ranging range is 3-5km with
high stability, which applied in Gun aiming and UAV pod.
Lasers with emission wavelengths longer than 1.4 μm are often
called “eye-safe”, because light in that wavelength range is
strongly absorbed in the eye’s cornea and lens and therefore cannot
reach the significantly more sensitive retina. Obviously, the
quality “eye-safe” depends not only on the emission wavelength, but
also on the power level and the optical intensity which can reach
the eye. Eye-safe lasers are particularly important in
1535nm-laser-for-ranging-and-radar cases where light needs to be
transmitted over substantial distances in open air. Examples are
laser rangefinders and free-space optical communications.
Parameter
Parameter | Unit | Min | Typical | Max |
Laser wavelength | nm | 1533 | 1534 | 1535 |
working frequency | Hz | / | 1-10 | 10 |
Pulse Width | ns | 4.3 | 4.6 | 5 |
Peak power | Kw | 20 | ≥20 | 28 |
Spot size | mm | Φ0.16 | Φ0.17 | Φ0.18 |
Divergence angle | mrad | 9 | 10 | 12 |
Operating temperature | ˚C | -45 – +65 | -45 – +65 | -45 – +75 |
Overall dimension | mm | 26.3×9.9×7.9 | 26.4×10×8 | 26.5×10.1×8.1 |
weight | g | 7 | 8 | 8.5 |
Energy Stability(RMS,104shots) | % | 0.6 | 0.8 | 1 |
M-Square | NA | 1.1 | 1.2 | 1.3 |
LD Working Current | A | 7.5 | 7.5 | 7.5 |
LD Working Current pulse width | ms | 1.2 | 1.4 | 1.7 |
LD Working Voltage | V | 1.7 | 1.8 | 1.9 |
Power Consumption | W | 0.017 | 0.021 | 0.033 |
Beam Alignment Tolerance (Off-axis Angle) | mrad | 1 | 8 | 16 |
Beam Alignment Tolerance (Position(△r)) | mm | 0.1 | 0.2 | 0.3 |
Storage Temperature | ˚C | -45 | / | 80 |
Operating Humidity | R.H. | 5% | 40% | 85% |
Shock | NA | / | 15g, 0.5ms, 6 shocks | / |
3 axes, 2 shocks/axis | ||||
Vibration | NA | / | 20~2000Hz, 0.02g2/Hz | / |
3 axes, 1hr/axis | ||||
Expected Lifetime | Shots | / | 2×107 | / |
Feature
Application