Relation Between Discharge Length and Laser Pulse Characteristics in Longitudinally Excited CO2 Laser
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A longitudinally excited CO2 laser pumped by a fast discharge emits a short laser pulse, similarly to TEA and Q-switched CO2 lasers. We investigated the relation between the discharge length and the laser pulse characteristics to develop a longitudinally excited CO2 laser producing a high spike laser pulse. We examined discharge lengths of 30, 45, and 60 cm, using the same mirrors and the same excitation circuit with the same input energy. A longer discharge length increased the discharge volume and improved the laser output energy. However, the longer discharge length caused a long discharge formation time (a slow fall time of the discharge voltage) due to the higher discharge impedance, which resulted in a long laser pulse tail. Therefore, the longitudinally excited CO2 laser had optimum conditions for obtaining a high spike laser pulse effectively.
- K. Uno, K. Nakamura, T. Goto, and T. Jitsuno, J. IR. mm. THz. Wave. 30, 1123-1130 (2009).
- K. Uno, T. Jitsuno, and T. Akitsu, J. IR. mm. THz. Wave. 33, 485-490 (2012).
- H.-J. Chung, D.-H. Lee, J.-H. Hong, J.-H. Joung, Y.-M. Sung, S.-J. Park, and H.-J. Kim, Rev. Sci. Instrum. 73, 484-485 (2002).
- M. M. T. Loy, and P. A. Roland, Rev. Sci. Instrum. 48, 554-556 (1977). CrossRef
- S. V. Deshmukh and C. Rajagopalan, Opt. Laser Technol. 35, 517-521 (2003). CrossRef
- V. M. Orlovskii, A. N. Panchenko, and V. F. Tarasenko, Quantum Electron. 40, 192-194 (2010). CrossRef
- N. Menyuk, and P. F. Moulton, Rev. Sci. Instrum. 51, 216-220 (1980). CrossRef
- J. W. Bethel, H. J. Baker, D. R. Hall, Opt. Commun. 125, 352-358 (1998). CrossRef
- Relation Between Discharge Length and Laser Pulse Characteristics in Longitudinally Excited CO2 Laser
Journal of Infrared, Millimeter, and Terahertz Waves
Volume 34, Issue 3-4 , pp 225-230
- Cover Date
- Print ISSN
- Online ISSN
- Springer US
- Additional Links
- Longitudinal excitation
- CO2 laser
- Fast discharge
- Laser pulse shape
- Industry Sectors
- Author Affiliations
- 1. Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi, 400-8511, Japan
- 2. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan