SINGLE-FREQUENCY TI:SAPPHIRE LASER WITH INTRACAVITY ETALON

带内腔标准具的单频钛宝石激光器

• 批准号: 7955872
• 负责人: CHULHO KONG
• 金额: $ 2.85万
• 依托单位: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
• 依托单位国家: 美国
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-01 至 2010-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7955872
• 关键词: Acoustics; Biomedical Research; Computer Retrieval of Information on Scientific Projects Database; Frequencies; Funding; Grant; Institution; Lasers; Research; Research Personnel; Resolution; Resources; Sapphire; Source; Spectrum Analysis; United States National Institutes of Health; light emission

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. High resolution spectroscopy is often fundamentally limited in accuracy by the spectral linewidth of the excitation laser. Observing spectral shifts in emission light due to opto-acoustic interactions requires sub-GHz bandwidth lasers. However, Ti:Sapphire lasers operating in broadband mode typically produce a bandwidth on the order of 1 GHz or more. By inserting an etalon in the laser cavity, the Ti:Sapphire laser linewidth can be narrowed to the range of 10 MHz with 60~70% efficiency. Further reduction in linewidth to the range of 500 kHz can be achieved with minimal loss by employing active frequency control.

该子项目是利用该技术的众多研究子项目之一 资源由 NIH/NCRR 资助的中心拨款提供。子项目和 研究者 (PI) 可能已从 NIH 的另一个来源获得主要资金， 因此可以在其他 CRISP 条目中表示。列出的机构是 对于中心来说，它不一定是研究者的机构。 高分辨率光谱的精度通常受到激发激光光谱线宽的根本限制。观察由于光声相互作用而导致的发射光光谱变化需要 sub-GHz 带宽激光器。 然而，在宽带模式下工作的钛宝石激光器通常会产生 1 GHz 或更高数量级的带宽。 通过在激光腔中插入标准具，可以将钛宝石激光线宽缩小到10 MHz范围，效率为60~70%。 通过采用有源频率控制，可以以最小的损耗将线宽进一步减小到 500 kHz 的范围。