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1. 发明授权

US08442083B2 Systems and methods for stabilizing laser frequency based on an isoclinic point in the absorption spectrum of a gas 有权
标题翻译：基于气体吸收光谱中的等角点稳定激光频率的系统和方法
公开(公告)号：US08442083B2
公开(公告)日：2013-05-14
申请号：US13281323
申请日：2011-10-25
申请人： Nathan P. Wells , James C. Camparo
发明人： Nathan P. Wells , James C. Camparo
IPC分类号： H01S3/13
CPC分类号： H01S5/0687 , H01S3/1392 , H01S5/06837 , H01S5/183
摘要： Systems and methods for stabilizing laser frequency based on an isoclinic point of an atomic or molecular medium are provided herein. A system may include: a transmission cell containing a gas and configured to transmit light from the laser, the gas having an absorption spectrum with an isoclinic point; a photodiode generating an output based on an amplitude of transmitted laser light; and circuitry configured to tune the frequency of the laser to the isoclinic point of the absorption spectrum based on the output. The absorption spectrum may have first and second overlapping peaks respectively corresponding to first and second transitions of the gas, the isoclinic point being a saddle point between the first and second peaks. The first and second peaks may have substantially equal amplitude as one another and/or may broaden substantially equally as each other as a function of a physical parameter of the gas.
摘要翻译：本文提供了基于原子或分子介质的等角点稳定激光频率的系统和方法。系统可以包括：包含气体并被配置为透射来自激光器的光的传输单元，所述气体具有具有等角点的吸收光谱; 基于发射激光的振幅产生输出的光电二极管; 以及被配置为基于输出将激光器的频率调谐到吸收光谱的等角点的电路。吸收光谱可以具有分别对应于气体的第一和第二跃迁的第一和第二重叠峰，异斜面点是第一和第二峰之间的鞍点。第一和第二峰可以具有彼此基本上相等的幅度和/或可以作为气体的物理参数的函数彼此大致相等地扩大。

2. 发明授权

US08050301B2 Systems and methods for stabilizing laser frequency based on an isoclinic point in the absorption spectrum of a gas 有权
标题翻译：基于气体吸收光谱中的等角点稳定激光频率的系统和方法
公开(公告)号：US08050301B2
公开(公告)日：2011-11-01
申请号：US12702991
申请日：2010-02-09
申请人： Nathan P. Wells , James C. Camparo
发明人： Nathan P. Wells , James C. Camparo
IPC分类号： H01S3/13
CPC分类号： H01S5/0687 , H01S3/1392 , H01S5/06837 , H01S5/183
摘要： Systems and methods for stabilizing laser frequency based on an isoclinic point of an atomic or molecular medium are provided herein. A system may include: a transmission cell containing a gas and configured to transmit light from the laser, the gas having an absorption spectrum with an isoclinic point; a photodiode generating an output based on an amplitude of transmitted laser light; and circuitry configured to tune the frequency of the laser to the isoclinic point of the absorption spectrum based on the output. The absorption spectrum may have first and second overlapping peaks respectively corresponding to first and second transitions of the gas, the isoclinic point being a saddle point between the first and second peaks. The first and second peaks may have substantially equal amplitude as one another and/or may broaden substantially equally as each other as a function of a physical parameter of the gas.
摘要翻译：本文提供了基于原子或分子介质的等角点稳定激光频率的系统和方法。系统可以包括：包含气体并被配置为透射来自激光器的光的传输单元，所述气体具有具有等角点的吸收光谱; 基于发射激光的振幅产生输出的光电二极管; 以及被配置为基于输出将激光器的频率调谐到吸收光谱的等角点的电路。吸收光谱可以具有分别对应于气体的第一和第二跃迁的第一和第二重叠峰，异斜面点是第一和第二峰之间的鞍点。第一和第二峰可以具有彼此基本上相等的幅度和/或可以作为气体的物理参数的函数彼此大致相等地扩大。

3. 发明申请

US20120039348A1 SYSTEMS AND METHODS FOR STABILIZING LASER FREQUENCY BASED ON AN ISOCLINIC POINT IN THE ABSORPTION SPECTRUM OF A GAS 有权
标题翻译：基于气体吸收光谱中的非线性点稳定激光频率的系统和方法
公开(公告)号：US20120039348A1
公开(公告)日：2012-02-16
申请号：US13281323
申请日：2011-10-25
申请人： Nathan P. Wells , James C. Camparo
发明人： Nathan P. Wells , James C. Camparo
IPC分类号： H01S3/13
CPC分类号： H01S5/0687 , H01S3/1392 , H01S5/06837 , H01S5/183
摘要： Systems and methods for stabilizing laser frequency based on an isoclinic point of an atomic or molecular medium are provided herein. A system may include: a transmission cell containing a gas and configured to transmit light from the laser, the gas having an absorption spectrum with an isoclinic point; a photodiode generating an output based on an amplitude of transmitted laser light; and circuitry configured to tune the frequency of the laser to the isoclinic point of the absorption spectrum based on the output. The absorption spectrum may have first and second overlapping peaks respectively corresponding to first and second transitions of the gas, the isoclinic point being a saddle point between the first and second peaks. The first and second peaks may have substantially equal amplitude as one another and/or may broaden substantially equally as each other as a function of a physical parameter of the gas.
摘要翻译：本文提供了基于原子或分子介质的等角点稳定激光频率的系统和方法。系统可以包括：包含气体并被配置为透射来自激光器的光的传输单元，所述气体具有具有等角点的吸收光谱; 基于发射激光的振幅产生输出的光电二极管; 以及被配置为基于输出将激光器的频率调谐到吸收光谱的等角点的电路。吸收光谱可以具有分别对应于气体的第一和第二跃迁的第一和第二重叠峰，异斜面点是第一和第二峰之间的鞍点。第一和第二峰可以具有彼此基本上相等的幅度和/或可以作为气体的物理参数的函数彼此大致相等地扩大。

4. 发明申请

US20110194577A1 Systems And Methods For Stabilizing Laser Frequency Based On An Isoclinic Point In The Absorption Spectrum Of A Gas 有权
标题翻译：基于气相吸收光谱中等位点稳定激光频率的系统与方法
公开(公告)号：US20110194577A1
公开(公告)日：2011-08-11
申请号：US12702991
申请日：2010-02-09
申请人： Nathan P. Wells , James C. Camparo
发明人： Nathan P. Wells , James C. Camparo
IPC分类号： H01S3/13
CPC分类号： H01S5/0687 , H01S3/1392 , H01S5/06837 , H01S5/183
摘要： Systems and methods for stabilizing laser frequency based on an isoclinic point of an atomic or molecular medium are provided herein. A system may include: a transmission cell containing a gas and configured to transmit light from the laser, the gas having an absorption spectrum with an isoclinic point; a photodiode generating an output based on an amplitude of transmitted laser light; and circuitry configured to tune the frequency of the laser to the isoclinic point of the absorption spectrum based on the output. The absorption spectrum may have first and second overlapping peaks respectively corresponding to first and second transitions of the gas, the isoclinic point being a saddle point between the first and second peaks. The first and second peaks may have substantially equal amplitude as one another and/or may broaden substantially equally as each other as a function of a physical parameter of the gas.
摘要翻译：本文提供了基于原子或分子介质的等角点稳定激光频率的系统和方法。系统可以包括：包含气体并被配置为透射来自激光器的光的传输单元，所述气体具有具有等角点的吸收光谱; 基于发射激光的振幅产生输出的光电二极管; 以及被配置为基于输出将激光器的频率调谐到吸收光谱的等角点的电路。吸收光谱可以具有分别对应于气体的第一和第二跃迁的第一和第二重叠峰，异斜面点是第一和第二峰之间的鞍点。第一和第二峰可以具有彼此基本上相等的幅度和/或可以作为气体的物理参数的函数彼此大致相等地扩大。

5. 发明授权

US07221231B2 Discharge lamp stabilization system 有权
标题翻译：放电灯稳定系统
公开(公告)号：US07221231B2
公开(公告)日：2007-05-22
申请号：US11179442
申请日：2005-07-11
申请人： James C. Camparo , Charles M. Klimcak
发明人： James C. Camparo , Charles M. Klimcak
IPC分类号： H03B17/00
CPC分类号： G04F5/14
摘要： An RF-discharge lamp stabilization system for preferred use in a Rubidium atomic clock, senses acoustic oscillations of plasma ions in the 20.0 kHz range to assess the performance of the lamp for determining radio frequency parameters of the lamp while the lamp is in operation and while the performance of an atomic clock is influenced by the plasma character, with lamp spectral outputs being actively stabilized for improved vapor-cell clock performance.
摘要翻译：用于铷原子钟的优选使用的RF放电灯稳定系统感测在20.0kHz范围内的等离子体离子的声振荡，以评估灯的性能，用于在灯处于运行期间确定灯的射频参数，同时原子钟的性能受到等离子体特性的影响，灯光谱输出被积极稳定，从而改善了气泡时钟性能。

6. 发明授权

US07847597B1 Precision frequency change detector 有权
标题翻译：精密变频检测器
公开(公告)号：US07847597B1
公开(公告)日：2010-12-07
申请号：US12456287
申请日：2009-06-15
申请人： Yat C. Chan , James C. Camparo , Walter A. Johnson , Christine Humphries, legal representative , Albert M. Young , Sarunas K. Karuza
发明人： Yat C. Chan , James C. Camparo , Walter A. Johnson , Albert M. Young , Sarunas K. Karuza
IPC分类号： G01R23/02 , H03D3/00 , H03K9/06
CPC分类号： G01R29/26 , G01R23/00 , G01R23/14 , G01R25/00
摘要： A frequency change detector splits a frequency standard signal into two undelayed frequency signals, one of which is delayed by a predetermined amount. The delayed signal is then mixed with the undelayed frequency signal into a mixed signal that is further filtered and amplified for providing an output signal indicating frequency changes of the frequency standard signal. The mixed frequency signal indicates frequency changes of the original frequency standard signal without reference to another frequency standard. This frequency change detector is well suited for use on satellites as an early warning detection of changes in on-board atomic frequency standards.
摘要翻译：频率变化检测器将频率标准信号分成两个未延迟的频率信号，其中一个延迟了预定的量。然后将延迟的信号与未延迟的频率信号混合成混合信号，该混合信号被进一步滤波和放大，以提供指示频率标准信号的频率变化的输出信号。混频信号表示原频率标准信号的频率变化，不参考另一频率标准。该频率变化检测器非常适合用于卫星，作为车载原子频率标准变化的早期预警检测。

7. 发明授权

US6025755A Method of stabilizing electromagnetic field strength in an atomic system 失效
标题翻译：稳定原子系统电磁场强度的方法
公开(公告)号：US6025755A
公开(公告)日：2000-02-15
申请号：US989799
申请日：1997-12-12
申请人： James C. Camparo
发明人： James C. Camparo
IPC分类号： H03L7/26
CPC分类号： H03L7/26
摘要： Frequency stabilization of an atomic system is improved by closed loop stabilization of the power level of an atomic excitation signal. A second harmonic atomic Rabi response varies with excitation power level so that power modulation of the atomic excitation and demodulation of the second harmonic response produces a power error signal for closed loop power level control using a voltage controlled attenuator. The atomic system also includes conventional frequency stabilization closed loop control using a voltage controlled oscillator. Both power and frequency modulation of the excitation signal generate a complete atomic response from which both power and frequency error signals are generated for both power and frequency closed loop stabilization.
摘要翻译：通过原子激发信号的功率电平的闭环稳定来提高原子系统的稳定性。二次谐波原子Rabi响应随着激励功率电平而变化，使得二次谐波响应的原子激励和解调的功率调制产生用于使用压控衰减器的闭环功率电平控制的功率误差信号。原子系统还包括使用压控振荡器的常规频率稳定闭环控制。激励信号的功率和频率调制均产生完整的原子响应，从而从功率和频率误差信号两者都产生功率和频率闭环稳定。

8. 发明授权

US5657340A Rubidium atomic clock with fluorescence optical pumping and method using same 失效
标题翻译：铷原子钟与荧光光泵浦和方法使用相同
公开(公告)号：US5657340A
公开(公告)日：1997-08-12
申请号：US636760
申请日：1996-04-19
申请人： James C. Camparo , Spencer B. Delcamp
发明人： James C. Camparo , Spencer B. Delcamp
IPC分类号： G04F5/14 , H03L7/26 , H01S3/09 , H01S1/00 , H01S1/06
CPC分类号： H03L7/26 , G04F5/14
摘要： A stabilized atomic clock system uses a stabilized 780.2 nm pump laser for exciting rubidium-85 atoms fluorescing to optically pump rubidium-87 atoms both contained in a gas cell enclosed in a resonant microwave cavity for broadcasting a 6834.7 MHz microwave signal matched to Rb87 hyperfine ground states which are insensitive to pump laser wavelength fluctuations of the pump laser providing the fluorescence optical pumping of the Rb87 atoms to create a population imbalance sensed by a stabilized 794.7 nm probe laser transmitting a probe beam through the cell to a probe laser photodetector generating a probe laser signal used to stabilize the microwave signal to the atomic system and used to generate a constant frequency tick rate signal that is consequently insensitive to pump laser frequency drift due to reduced light shift coefficient.
摘要翻译：稳定的原子钟系统使用稳定的780.2nm泵浦激光器激发铷-85原子，发射荧光以泵浦包含在谐振微波腔内的气体电池中的铷-87原子，用于广播与Rb87超精细地面匹配的6834.7MHz微波信号对泵浦激光器的泵激光波长波动不敏感的状态，其提供Rb87原子的荧光光泵浦，以产生由稳定的794.7nm探针激光器感测的总体不平衡，所述激光将探针束通过细胞传输到产生探针的探针激光光电探测器激光信号用于将微波信号稳定到原子系统，并用于产生恒定频率刻度速率信号，因此由于减少的光偏移系数，泵浦激光器频率漂移不敏感。

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