Experimental Investigation of Generating Laser Beams of on-Demand Lateral Field Distribution from Digital Lasers
| Autor: | Cing Yi Huang, Shu Chun Chu, Kuo Chih Chang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Distribution (number theory) Field (physics) Physics::Optics lcsh:Technology 01 natural sciences Article law.invention 010309 optics Optics law digital lasers 0103 physical sciences General Materials Science multi-point laser beam Physics::Atomic Physics lcsh:Microscopy structure beams spatial light modulator lcsh:QC120-168.85 010302 applied physics arbitrary beam Spatial light modulator lcsh:QH201-278.5 lcsh:T business.industry Gain Laser beam shaping Amplitude lcsh:TA1-2040 Modulation lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:Engineering (General). Civil engineering (General) business lcsh:TK1-9971 Light field |
| Zdroj: | Materials Volume 12 Issue 14 Materials, Vol 12, Iss 14, p 2226 (2019) |
| ISSN: | 1996-1944 |
| Popis: | A new type of laser system, known as a digital laser, was proposed in 2013. Many well-known laser beams with known analytical forms have been successfully generated in digital lasers. However, for a light field that does not have an analytical form, such as a multi-point light field or a light field with an arbitrary lateral distribution, how to generate such a light field from a digital laser has not been explored. The goal of this study was to experimentally explore how to generate an on-demand lateral laser field in a digital laser. In this study, a multi-point Gaussian laser beam was successfully generated in a digital laser by both controlling the range of the laser gain and the modulation of the phase boundary of the end of the cavity. This study then generated laser beams with an on-demand lateral field distribution by generating a superimposed multi-point laser field in a digital laser. Examples of triangles, rectangles, and letter T-shaped light fields produced by digital lasers were experimentally demonstrated. In summary, this study experimentally showed that a laser beam with an on-demand lateral field distribution could be generated in a digital laser by generating a superimposed multi-point laser field in a digital laser, in which a laser gain region covering the entire intra-cavity multi-point light field and the projected SLM (spatial light modulator) modulation function adopting a mimic amplitude mask are both used. |
| Databáze: | OpenAIRE |
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