Y3Al5O12:Nd solid-state laser
· Four-level laser.
· Basics of laser assembly and alignment.
· Laser diode pumping.
· Visualization of infrared radiation.
· Laser threshold and efficiency
· Properties and Stability of Cavity
· Stability criterion of an optical Cavity
The neodymium doped yttrium aluminum garnet (Y3Al5O12:Nd) solid-state laser is one of the most common commercial lasers, which is widely used in industrial technology, medicine, and scientific research. Y3Al5O12:Nd crystals have a unique combination of spectral-luminescent, mechanical, and thermal properties, which makes them an attractive material as an active medium for solid-state lasers. The experimental task-oriented study of the physical principles of operation and design features of the solid-state laser crystal Y3Al5O12:Nd, and optical pumping of the laser are presented in the work. Students will gain skills in assembling and aligning solid-state lasers. They will also learn how to measure the basic characteristics of lasers: output power, wavelength, generation threshold, differential and total laser efficiency. Students will study the dependence of the laser parameters on the transmission of the output mirror of the resonator. They will be able to analyze the theoretically calculated parameters of the optical resonator with experimental data. Students will also learn how to detect infrared radiation using a laser beam visualizer and photodetector.
1) 808 nm Laser diode module with power 1W in holder, 1 pc.
2) Diode laser and temperature controller, 1 pc.
3) Collimator lens in holder, 1 pc.
4) Focusing lens f=50 mm in holder, 1 pc.
5) Input laser mirror in holder, ROC flat, 1 pc.
6) YAG:Nd rod in holder, 1 pc.
7) Output laser mirror in holder, ROC=100 mm
8) Laser beam visualizer IR2-1, 1 pc.
9) Light filter, 1 pc.

10) Optical rail 50 cm, 1 pc.
11) Optical rail carriers, 11 pcs.
12) Alignment diode laser 650 nm in holder, 1 pc.
13) Photodetector in holder, 1 pc.
14) Digital multimeter OWON B41T, 1 pc.
15) Alignment targets, 2 pcs.
16) Set for optics cleaning, 1 pc.
17) Manual, 1 pc.
18) Packing case with lodgement, 1 pc.
1) Digital Oscilloscope, 100 MHz, 2 channels, 1 pc.
2) Set of output spherical mirrors with different transmission (T(@1064 nm)=2%, 10%, 15%).
3) Set of focusing lenses with different focus (40 mm, 50 mm, 100 mm).
4) Active element from crystal LiYF4:Nd.