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    • 4. 发明授权
    • Photoacoustic sensor with mirror
    • 光声传感器带镜
    • US08848191B2
    • 2014-09-30
    • US13419827
    • 2012-03-14
    • Lisa Lust
    • Lisa Lust
    • G01N21/00
    • G01N21/17G01N2021/1704
    • A photoacoustic sensing device includes a laser tuned to emit light to cause optical absorption by a gas to be detected, a resonant acoustic sensor positioned to receive pressure waves from the gas, wherein the laser is modulated to match a resonant frequency of the resonant acoustic sensor, and a first mirror positioned to receive light from the laser after the light has passed through the gas and to reflect the received light back through the gas to cause additional optical absorption.
    • 光声感测装置包括被调谐以发射光以引起待检测气体的光吸收的激光器,定位成接收来自气体的压力波的谐振声传感器,其中激光器被调制以匹配谐振声传感器的谐振频率 以及第一反射镜,其被定位成在光已经通过气体之后接收来自激光器的光并且将接收到的光反射回通过气体以引起额外的光学吸收。
    • 6. 发明申请
    • TECHNIQUE FOR OPTICALLY PUMPING ALKALI-METAL ATOMS USING CPT RESONANCES
    • 使用CPT共振光学抽吸碱性金属成分的技术
    • US20070076776A1
    • 2007-04-05
    • US11161094
    • 2005-07-22
    • Lisa LustDouglas CarlsonDaniel Youngner
    • Lisa LustDouglas CarlsonDaniel Youngner
    • H01S3/22
    • H03L7/26G04F5/145
    • Systems and methods for optically pumping alkali-metal atoms using Coherence Population Trapping (CPT) resonances are disclosed. An illustrative push-pull optical pumping system for inducing CPT resonances in a resonance cell containing an admixture of alkali-metal atoms and one or more buffer gasses may include a laser assembly adapted to produce alternating orthogonally polarized light, and at least one DC current source adapted to output a constant-intensity carrier current signal for inducing laser emission from the laser assembly at a carrier wavelength of the alkali-metal atoms. An RF modulated signal outputted from an RF modulation source can be rectified, split, and phase-shifted for inducing a time-dependent polarization of the laser light that can be used to enhance CPT resonances. The alternating orthogonally polarized light from the laser assembly can then be used to optically pump the alkali-metal atoms within the vapor cavity, producing a dark state that can be detected with a photodetector or the like.
    • 公开了使用Coherence群体捕获(CPT)共振光学泵浦碱金属原子的系统和方法。 用于在含有碱金属原子和一种或多种缓冲气体的混合物的共振电池中诱导CPT共振的说明性推挽光泵送系统可以包括适于产生交替的正交偏振光的激光组件,以及至少一个DC电流源 适于输出恒定强度的载流子电流信号,用于在碱金属原子的载流波长下激发来自激光组件的激光发射。 可以对从RF调制源输出的RF调制信号进行整流,分频和相移,以引起可用于增强CPT谐振的激光的时间依赖极化。 然后可以使用来自激光组件的交替正交偏振光来光学地泵送蒸气腔内的碱金属原子,产生可用光电检测器等检测的暗态。
    • 9. 发明申请
    • PASSIVE ANALOG THERMAL ISOLATION STRUCTURE
    • 被动模拟热隔离结构
    • US20070205473A1
    • 2007-09-06
    • US11276538
    • 2006-03-03
    • Dan YoungnerLisa Lust
    • Dan YoungnerLisa Lust
    • H01L29/82
    • B81B7/0087B81B2201/032F28F13/00F28F2270/00G05D23/024
    • A thermal isolation structure for use in passively regulating the temperature of a microdevice is disclosed. The thermal isolation structure can include a substrate wafer and a cap wafer defining an interior cavity, and a number of double-ended or single-ended thermal bimorphs coupled to the substrate wafer and thermally actuatable between an initial position and a deformed position. The thermal bimorphs can be configured to deform and make contact with the cap wafer at different temperatures, creating various thermal shorts depending on the temperature of the substrate wafer. When attached to a microdevice such as a MEMS device, the thermal isolation structure can be configured to maintain the attached device at a constant temperature or within a particular temperature range.
    • 公开了一种用于被动调节微型设备的温度的隔热结构。 热隔离结构可以包括限定内腔的衬底晶片和盖晶片,以及耦合到衬底晶片并可在初始位置和变形位置之间热激活的多个双端或单端热双压电晶片。 热双晶体可以被配置为在不同温度下变形并与盖晶片接触,根据基板晶片的温度产生各种热短路。 当附接到诸如MEMS器件的微设备时,热隔离结构可以被配置为将附接的器件保持在恒定温度或特定温度范围内。