Article
 

A versatile femtosecond stimulated Raman spectroscopy setup with tunable pulses in the visible to near infrared

公开 Deposited

可下载的内容

下载PDF文件
https://ir.library.oregonstate.edu/concern/articles/sj1393601

Descriptions

Attribute NameValues
Creator
Abstract
  • We demonstrate a versatile and efficient setup to perform femtosecond stimulated Raman spectroscopy (FSRS). Technical innovations are implemented to achieve the wavelength tunability for both the picosecond narrowband Raman pump pulse and femtosecond broadband Raman probe pulse. Using a simplified one-grating scheme in a home-built second harmonic bandwidth compressor followed by a two-stage noncollinear optical parametric amplifier, we tune the Raman pump pulse from ca. 480 to 750 nm. To generate the suitable Raman probe pulse in tandem, we rely on our recently demonstrated broadband up-converted multicolor array technique that readily provides tunable broadband laser sidebands across the visible to near-infrared range. This unique setup has unparalleled flexibility for conducting FSRS. We measure the ground-state Raman spectra of a cyclohexane standard using tunable pump-probe pairs at various wavelengths across the visible region. The best spectral resolution is ~12 cm⁻¹. By tuning the pump wavelength closer to the electronic absorption band of a photoacid pyranine in water, we observe the pre-resonantly enhanced Raman signal. The stimulated Raman gain of the 1627 cm⁻¹ mode is increased by over 15 times.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Zhu, L., Liu, W., & Fang, C. (2014). A versatile femtosecond stimulated Raman spectroscopy setup with tunable pulses in the visible to near infrared. Applied Physics Letters, 105(4), 041106. doi:10.1063/1.4891766
Journal Title
Journal Volume
  • 105
Journal Issue/Number
  • 4
权利声明
Funding Statement (additional comments about funding)
  • This work was funded by the Oregon State Universityfaculty research startup grant to C. Fang.
Publisher
Peer Reviewed
Language
Replaces

关联

Parents:

This work has no parents.

单件

缩略图 标题 上传日期 公开度 行动
file details ZhuLiangdongPhysicsVersatileFemtosecondStimulated.pdf 2017-07-25 公开 下载