SBIR Phase I: Large Aperture, Periodically Poled, Hydrothermal Potassium Titanyl Phosphate for Highly Efficient Frequency Conversion of High-Power Solid-State and Fiber Lasers

SBIR 第一阶段：大孔径、周期性极化、水热磷酸钛氧钾，用于高功率固态和光纤激光器的高效频率转换

• 批准号: 0319265
• 负责人: Tony Roberts
• 金额: $ 9.95万
• 依托单位: ADVR, INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-01 至 2003-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0319265&HistoricalAwards=false
• 关键词: SBIR; Phase; Large; Aperture; Periodically

This Small Business Innovation Research (SBIR) Phase I project proposes to investigate the feasibility of fabricating large-aperture, periodic ferroelectric domain gratings for quasi-phase matched laser frequency conversion. The key innovation in this effort is the use of low temperature hydrothermally grown potassium titanyl phosphate (LTH-KTP) as the nonlinear optical substrate material. Using LTH-KTP will enable a simplified poling process, resulting in increased fabrication yields, lower component costs as well as allow the fabrication of high-quality, large aperture (2mm) periodically poled wafers. The ability to periodically pole thick wafers of hydrothermally grown KTP, combined with its high resistance to optical damage (500MW/cm2) will enable highly efficient, wavelength conversion of high-power laser sources for use in Lidar-based remote sensing applications including the increasingly important Homeland Security area of standoff detection of chemical and biological agents. The anticipated results of the Phase I effort include a demonstration of periodic poling in LTH-KTP using the micro-electrode technology and a preliminary assessment of the effect different poling configurations have on the quality of the domain grating. In the Phase II effort, the poling technology will be refined and grating structures suitable commercial applications will be fabricated.The ability to periodically pole thick wafers of hydrothermally grown KTP, combined with its high resistance to optical damage will enable highly efficient, nonlinear optical frequency conversion of high-power ytterbium fiber and diode pumped solid state Nd: YAG lasers sources. Laser sources with increased pulse energies, wavelength flexibility, and excellent beam quality, will find use in both civilian and military applications. Specific applications include laser-based material processing (cutting, welding and marking), remote sensing for standoff detection of chemical and biological agents, environmental monitoring, forest management as well as Lidar-based missile identification, tracking, and targeting.

这项小型企业创新研究（SBIR）I期项目提议研究制造大型，周期性的铁电域的可行性，用于准时匹配的激光频率转换。这项工作的关键创新是将低温水热种植钾磷酸钾（LTH-KTP）用作非线性光学底物材料。使用LTH-KTP将启用简化的极点过程，从而增加制造产量，较低的组件成本以及允许制造高质量的大孔径（2mm）定期螺旋的晶片。在水热生长的KTP的周期性钢板上，其对光学损伤的高阻力（500MW/cm2）的能力将使高功率激光源的高效，波长转换，以在基于激光雷达的遥感应用中使用，包括越来越多的重要的国土安全区域的化学和生物生物生物学试验的越来越重要的祖国安全领域。第一阶段工作的预期结果包括使用微电极技术的LTH-KTP周期性波动的证明，以及对不同极点构型对域光栅质量的影响的初步评估。 In the Phase II effort, the poling technology will be refined and grating structures suitable commercial applications will be fabricated.The ability to periodically pole thick wafers of hydrothermally grown KTP, combined with its high resistance to optical damage will enable highly efficient, nonlinear optical frequency conversion of high-power ytterbium fiber and diode pumped solid state Nd: YAG lasers sources.脉搏能量增加，波长柔韧性和出色的光束质量的激光源将在平民和军事应用中使用。特定的应用包括基于激光的材料处理（切割，焊接和标记），用于对僵化的化学和生物学剂的遥控感，环境监测，森林管理以及基于激光雷达的导弹识别，跟踪和靶向。