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
Schematic of diode laser pumping
(Click figure to enlarge)
Frequency doubled 532 nm laser
(Click photo to enlarge)
Features
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
Introduction
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.
The instruction manual contains experimental configurations, principles, step-by-step instructions, and examples of experiment results. Please click Experiment Theory and Contents to find more information about this apparatus.
Specifications
| Semiconductor Laser | |
| CW Output Power | ≤ 500 mW |
| Polarization | TE |
| Center Wavelength | 808 ± 10 nm |
| Operation Temperature Range | 10 ~ 40 °C |
| Driving Current | 0 ~ 500 mA |
| Nd: YVO4 Crystal | |
| Nd Doping Concentration | 0.1 ~ 3 atm% |
| Dimension | 3×3×1 mm |
| Flatness | < λ/10 @632.8 nm |
Coating | AR@1064 nm, R<0.1%; T>90%@808 nm |
| KTP Crystal | |
| Transmissive Wavelength Range | 0.35 ~ 4.5 µm |
| Electro-Optic Coefficient | r33=36 pm/V |
| Dimension | 2×2×5 mm |
| Output Mirror | |
| Diameter | Φ 6 mm |
| Radius of Curvature | 50 mm |
| He-Ne Alignment Laser | ≤ 1 mW @632.8 nm |
| IR Viewing Card | Spectral response range: 0.7 ~ 1.6 µm |
| Laser Safety Goggles | OD= 4+ for 532 nm, 808 nm, and 1064 nm |
| Optical Power Meter | 2 μW ~ 200 mW, 6 scales |
Part List
| Description | Qty |
| 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 Laser | 1 |
632.8 nm He-Ne Alignment Laser (LLL-2A) | 1 |
| KTP Crystal | 1 |
| Nd: YVO4 Crystal | 1 |
| Output Mirror | 1 |
| Optical Filter | 1 |
| Alignment Aperture | 1 |
| Optical Power Meter | 1 |
| Power Cord | 2 |
| IR Viewing Card | 1 |
| Laser Safety Goggles | 1 |
| User's Manual | 1 |
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
Schematic of diode laser pumping
(Click figure to enlarge)
Frequency doubled 532 nm laser
(Click photo to enlarge)
