Physics Lab Equipment

LEOI-50 Diode-Pumped Solid-State Laser Demonstrator

LEOI-50 Diode-Pumped Solid-State Laser Demonstrator


  • Laser diode output up to 500 mW at 808 nm

  • Variable pumping current

  • Frequency doubling via crystal

  • Including He-Ne alignment laser and optical power meter

  • Laser safety googles for OD4+ protection against 532/808/1064 nm laser radiation


LEOI-50 is designed for teaching nonlinear optical experiments at universities and colleges. It can help students understand the theory of a diode-pumped solid-state (DPSS) laser with frequency doubling technique. A solid-state laser with Nd: YVO4 as the gain material, which is pumped by a semiconductor laser at 808 nm, emits infrared light at 1.064 μm. By incorporating a KTP crystal into the laser cavity to generate frequency-doubled green light, it is possible to observe frequency doubling phenomenon, and measure frequency doubling efficiency, phase matching angle and other basic parameters.


Semiconductor Laser
  CW Output Power≤ 500 mW
  Center Wavelength808 ± 10 nm
  Operation Temperature Range10 ~ 40 °C
  Driving Current0 ~ 500 mA
Nd: YVO4 Crystal
  Nd Doping Concentration0.1 ~ 3 atm%
  Dimension3×3×1 mm
  Flatness< λ/10 @632.8 nm


AR@1064 nm, R<0.1%; T>90%@808 nm

KTP Crystal
  Transmissive Wavelength Range0.35 ~ 4.5 µm
  Electro-Optic Coefficientr33=36 pm/V
  Dimension2×2×5 mm
Output Mirror
  DiameterΦ 6 mm
  Radius of Curvature50 mm
He-Ne Alignment Laser≤ 1 mW @632.8 nm
IR Viewing CardSpectral response range: 0.7 ~ 1.6 µm
Laser Safety GogglesOD= 4+ for 532 nm, 808 nm, and 1064 nm
Optical Power Meter2 μW ~ 200 mW, 6 scales

Part List

Optical Rail (LEPO-54)1
Two Axis Adjustment Holder (SZ-21)2
Four Axis Adjustment Holder (SZ-24)2
He-Ne Laser Holder (SZ-42)1
808 nm Semiconductor Laser1

632.8 nm He-Ne Alignment Laser (LLL-2A)

KTP Crystal1
Nd: YVO4 Crystal1
Output Mirror1
Optical Filter1
Alignment Aperture1
Optical Power Meter1
Power Cord2
IR Viewing Card1
Laser Safety Goggles1
User's Manual1

LEOI-50 Diode-Pumped Solid-State Laser Demonstrator.png

Schematic of apparatus

(Click figure to enlarge)

1. Laser diode

2. Nd:YVO4 crystal

3. KTP crystal

4. Output mirror

5. Detector head

6. He-Ne laser

7. Laser power meter

8. Laser diode driver

LEOI-50 Diode-Pumped Solid-State Laser Demonstrator.png

Schematic of diode laser pumping

(Click figure to enlarge)

    LEOI-50 Diode-Pumped Solid-State Laser Demonstrator.jpg

Frequency doubled 532 nm laser

(Click photo to enlarge)

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