MRI: Development of a robust, high-repetition rate, ultrafast mid-IR laser source for spectroscopy and sensing

MRI：开发用于光谱学和传感的强大、高重复率、超快中红外激光源

• 批准号: 0821763
• 负责人: Randy Bartels
• 金额: $ 25万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2011-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0821763&HistoricalAwards=false
• 关键词: MRI; Development; robust; repetition; rate

Objective:Spectroscopy harnessing the mid-infrared region of the electromagnetic spectrum is critical for scientific analysis for a vast array of fields. MIR vibrational transitions are dipole allowed, and can present a large interaction cross-section allowing for sensitive and specific detection of molecular species. Intellectual Merit:To address the need for robust, compact, energy efficient and relatively inexpensive ultrashort pulse MIR radiation, we will develop a novel ultrafast MIR spectral source. The source will be fiber-based and thus, tts low cost and portability will lead to an effective source for a wide range of chemical and biological applications. This source will extend applications of MIR spectroscopy to a large community, facilitating new experiments through the short pulses and high repetition rate available. The combination of short pulses and broad spectral bandwidths promise to reveal new insights using time-resolved spectroscopy, as well as the fingerprinting of chemical species in atmospheric samples.Broader Impacts:Because this equipment will be substantially less expensive and relatively easy to use, we expect it to have a substantial broad impact on student education. We plan to involve undergraduate researchers in both laser construction and spectroscopy applications. Involvement by students at our partner institutions and through summer undergraduate programs (REU, McNair, LSAMP) will as well as from CSU will allow us to encourage students from diverse backgrounds. We will also incorporate this laser source into three courses in our graduate curricula, both in ECE and Chemistry.

目的：利用电磁光谱的中红外区域的光谱学对于众多领域的科学分析至关重要。 MIR振动跃迁是偶极允许的，并且可以呈现大的相互作用横截面，允许对分子种类进行灵敏和特异性检测。智力优势：为了满足对坚固，紧凑，节能和相对便宜的超短脉冲MIR辐射的需求，我们将开发一种新型的超快MIR光谱源。该源将是基于纤维的，因此，其低成本和便携性将导致用于广泛的化学和生物应用的有效源。该源将把MIR光谱的应用扩展到一个大的社区，通过短脉冲和高重复率促进新的实验。短脉冲和宽光谱带宽的组合有望揭示新的见解，使用时间分辨光谱，以及大气样品中的化学物种的指纹。更广泛的影响：因为这种设备将大大降低成本，相对容易使用，我们预计它将有一个实质性的广泛影响学生的教育。我们计划让本科生研究人员参与激光构造和光谱应用。学生参与我们的合作机构，并通过夏季本科课程（REU，麦克奈尔，LSAMP）将以及从CSU将使我们能够鼓励来自不同背景的学生。我们还将把这种激光源纳入我们的研究生课程中的三门课程，包括ECE和化学。