Abstract
Q-switching of mid-infrared Er:YAG laser was obtained with an electro-optical shutter. For that the LiNbO3 Pockels cell was used in transversal quarter-wave arrangement with Brewster angle cut faces used as a polarizer. Parameters and dependences of this Q-switched system were investigated, i.e. a pulse length and generated pulse energy, delay between switching of flashlamp and Q-switch circuit, high voltage applied on Pockels cell, were measured and optimized. The resulted giant pulse length and energy was 60ns and 55 mJ, respectively. This generated pulse was obtained for the applied voltage around 1.4 kV and for the optimum delay value 450 μs. Problem of mid-infrared giant pulse delivery, which is needed for various technological applications, was solved by a specially designed cyclic olefin polymer coated silver hollow glass (COP/Ag) waveguide. Parameters of this waveguide were - diameter 700/850 μm and length 1 m. The measured transmission was 78.6 % which corresponded to delivered intensity 86MW/cm 2. Q-switched Er:YAG laser radiation in connection with this special delivery system gives a possibility of the surgical treatment in many medicine branches, for example ophthalmology, urology or dentistry.
| Original language | English |
|---|---|
| Pages (from-to) | 64-73 |
| Number of pages | 10 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5460 |
| DOIs | |
| Publication status | Published - 2004 |
| Event | Solid State Lasers and Amplifiers - Strasbourg, France Duration: 2004 Apr 27 → 2004 Apr 29 |
Keywords
- Er:YAG laser
- Hollow waveguide
- LiNbO Pockels cell
- Q-switching
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering