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You are here: Home / Applications / Ranging and Radar / 1064nm,532nm,355nm tunable laser for radar and ranging

High power quasi-continuous semiconductor laser (QCWLD) pumped high repetition rate electro-optic Q-switch multi-wavelength Nd:YAG laser. It is the most widely used laser in lidar at present. It can output 1064nm, 532nm and 355nm three-wavelength nanosecond laser pulses.The laser can select multiple wavelengths to work. The 1064nm band of the laser can be used to detect reflected light signal of objects on the ground, and the 532nm band is used for underwater target detection. The multi-wavelength Nd:YAG laser has very important value and economic benefit.

Theotry

1064nm,532nm,355nm tunable laser for radar and ranging(Nd:YAG Laser Crystal,LiNbO3 Laser Electric-Optic Q-Switch Crystal,BBO Nonlinear Crystal)

The main components of device are:

Gain medium - Nd YAG

It is used to generate a laser of 1064 nm to provide fundamental light for generating a laser of 355 nm.

BBO crystal is used as Q-switch medium, and both ends are coated with the antireflection film to 532nm.

BBO crystal

LD——Using the quasi-continuous laser diode surface array end-pumped Nd:YAG crystal, the peak power of the LD is 800W.

Resonant cavity——The cavity is a flat-flat cavity structure with a cavity length of 26cm

Laser medium——One the end of the crystal is coated with a multilayer dielectric film which is high-reflective to 1064 nm, high transmittance to 808 nm pumping light, and the other end is coated with an antireflection film to 1064nm light.

M1, M4, and M6——output mirrors for laser three-wavelength 1064nm, 532nm, and 355nm, respectively.

Feature

  • High gain
  • Low threshold
  • High quantum efficiency
  • Small thermal effect
  • Good mechanical properties
  • Suitable for all working modes

Application

  • Lidar
  • Laser Ranging
  • Laser detection
  • Lithography micromachining

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