Development of a Tunable Ultrashort Dye Laser System by Using Molecular Photonic Processes and a Nanosecond Pumping Laser
| Autor: | Truong Ta Dao, Pham Long, Hoang H Hoa, Le H Hai, Doan H Son, Do Quoc Khanh, Nguyen Dai Hung, Do Quang Hoa, V. T.T. Duong |
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| Rok vydání: | 2008 |
| Předmět: |
Atmospheric Science
Distributed feedback laser Dye laser Materials science business.industry Far-infrared laser Ti:sapphire laser Laser pumping Management Monitoring Policy and Law Oceanography Laser law.invention Gain-switching Optics law Optoelectronics Laser power scaling business Waste Management and Disposal |
| Zdroj: | ASEAN Journal on Science and Technology for Development. 23 |
| ISSN: | 0217-5460 |
| DOI: | 10.3125/asean.v23i4.988 |
| Popis: | The paper presents the physical processes and operational characteristics of an original subpicosecond dye laser system which is designed and successfully developed at our laboratory basing on the combination use of three photonic processes of dye molecules: 1) Fast spectrotemporal evolutions in the broadband dye laser emissions; 2) Generation of a chain of ultrashort pulses (spikes) from low-Q micro-cavity dye lasers; and 3) Non-linear resonant interaction between ultrashort laser pulses and highly-saturated dye media. Such a laser system provides a stable generation of single 500 fs pulses with a peak power of 300 MW at 606 nm. Particularly, the whole sub-picosecond laser system is pumped by a single nanosecond laser (Q-switched Nd:YAG laser). The spectral and time processes involved in these pulse-shortening methods are analyzed with a rate-equation model extended to wavelengths. A white light continuum generation was obtained by focusing the 500 fs pulses into 2 cm water cell. As a result, it enables us to produce widely tunable ultrashort laser pulses with a spectral selection and amplification of the supercontinuum spectrum. |
| Databáze: | OpenAIRE |
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