Advanced equipment for generation of intense sub-10 femtoseconds laser pulses in the spectral range of 1400 nm for Coulomb explosion imaging and laser induced electron diffraction

申请人申请资金购买产生接近1400 nm的亚10飞秒激光脉冲所需的紧急设备。该设备名为Dazzler WB45-1150-1600-T2，由FASTLITE(法国Palaiseau)独家提供。该最先进的设备提供了对频谱成分在1150 nm至1600 nm范围内的宽带激光脉冲的幅度和相位进行整形的可能性。该系统包括用于应用放大的激光脉冲的拉伸部件和用于脉冲压缩和高阶相位补偿的使用快速反馈回路的眩光镜，允许产生强的亚10飞秒脉冲。将通过耦合光学参数放大器(~40飞秒，~1毫焦耳，5 khz)进入填充有惰性气体的中空纤芯，或通过气室中的成丝。为了进行光谱相位和幅度校正，Dazzler将位于中空纤芯光纤或气室之后。Dazzler与先进激光光源(INRS-EMT)提供的独特光学参数放大激光系统相结合，首次允许在1400 nm光谱范围内产生强度低于10fs的激光脉冲。该独特的光源将被申请人用于研究波长对库仑爆炸成像的影响。2007年1月，一名学生(B.Bogdan先生)将在申请人的指导下开始攻读博士学位，并将全职从事这种独特的激光光源的开发和应用。此外，该光源将非常适合P.B.Corkum博士提出的激光诱导电子衍射，这是一种正在开发中的成像方法。*总的来说，将有可能在尚未研究的光谱范围内研究强场分子物理。最后，国际设施ALL的可用性。一个产生光谱范围接近1400纳米的亚10飞秒强激光脉冲的系统将启动与来自全国和世界各地的科学家的新合作。

The applicant requests funds for URGENT equipment required to produce sub-10 femtoseconds laser pulses near 1400 nm.  The equipment is called Dazzler WB45-1150-1600-T2 and solely soled by FASTLITE (Palaiseau, France).  This state-of-the-art equipment offers the possibility of shaping the amplitude and the phase of broadband laser pulses with spectral components in the range of 1150 nm up to 1600 nm.  The system includes stretching components for application with amplified laser pulses and a Dazzleroscope for pulse compression and high order phase compensation using a rapid feedback loop, allowing the generation of intense sub-10 femtoseconds pulses.  Ultra-broadband spectra will be generated by coupling the output of an Optical Parametric Amplifier (~40 femtoseconds, ~1 millijoule, 5 kHz) into a hollow core fibre filled with noble gas or through filamentation in a gas cell.  The Dazzler will be located after the hollow core fibre or after the gas cell for spectral phase and amplitude corrections.  The combination of the Dazzler with the unique Optical Parametric Amplifier laser system available at the Advanced Laser Light Sources (INRS-EMT) allows for the first time the generation of intense sub-10 fs laser pulses in the 1400 nm spectral range.This unique source will be used by the applicant for studying the impact of wavelength on Coulomb explosion imaging.  In January 2007, a student (Mr. B. Bogdan) will start Ph.D. under the supervision of the applicant and will work full time on the development and application of this unique laser source.  In addition, this source will be perfectly suitable for laser induced electron diffraction proposed by Dr. P.B. Corkum, an imaging approach which is under development at ALLS.  In general, it will be possible to investigate strong field molecular physics in a spectral range not yet studied for sub-10 fs laser pulses.  Finally, the availability at ALLS, an international facility, of a system producing intense sub-10 femtoseconds laser pulses in the spectral range near 1400 nm will initiate new collaboration with scientists from across the country and worldwide.