Noncollinear Optical Parametric Amplification of Broadband Infrared Sum Frequency Generation Vibrational Spectroscopy

Zeng, Wen1,2; Li, Bo-Han1,3; Zeng, Wei-Wang1,2; Zhou, Chuanyao1; Yang, Xueming1,4; Ren, Zefeng1

2024-02-26

10.1021/acs.jpclett.4c00003

JOURNAL OF PHYSICAL CHEMISTRY LETTERS   影响因子和分区

1948-7185

Sum-frequency generation (SFG) vibrational spectroscopy is an invaluable tool in surface science, known for its specificity to surfaces and interfaces. Despite its wide application, it is often hampered by weak signal detection. Here, we present an innovative enhancement technique of postsample amplification, using a picosecond noncollinear optical parametric amplifier (NOPA). We conducted a systematical investigation into the impact of different intensities of pump and SFG seed light, as the input signal in NOPA, and demonstrated this method on the octadecanethiol (ODT) molecules on gold films. The amplified SFG by NOPA reproduced the SFG vibrational spectra, enhanced by about 4 orders of magnitude but with broader spectral resolution due to the short pulse width of the pump light in NOPA. This study makes it possible to realize highly sensitive SFG measurements, marking a significant advancement in spectroscopic analysis techniques.

SCI ; EI

英语

其他

Chinese Academy of Sciences[2021YFA1500600] ; Ministry of Science and Technology of China["YSBR-007","ZDKYYQ20170003"] ; Chinese Academy of Sciences[22288201]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical

WOS:001176707200001

AMER CHEMICAL SOC

Web of Science

1.Chinese Acad Sci, State Key Lab Mol React Dynam, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China
4.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China

Zeng, Wen,Li, Bo-Han,Zeng, Wei-Wang,et al. Noncollinear Optical Parametric Amplification of Broadband Infrared Sum Frequency Generation Vibrational Spectroscopy[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2024,15(9).

Zeng, Wen,Li, Bo-Han,Zeng, Wei-Wang,Zhou, Chuanyao,Yang, Xueming,&Ren, Zefeng.(2024).Noncollinear Optical Parametric Amplification of Broadband Infrared Sum Frequency Generation Vibrational Spectroscopy.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,15(9).

Zeng, Wen,et al."Noncollinear Optical Parametric Amplification of Broadband Infrared Sum Frequency Generation Vibrational Spectroscopy".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 15.9(2024).