Highly efficient Raman conversion in O2 pumped by a seeded narrow band second-harmonic Nd:YAG laser

Hua, Xiaoqing; Leng, Jing; Yang, Hua; Sha, Guohe; Zhang, C.

doi:10.1007/s00340-005-1927-x

Cited by 13 publications

(5 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If the Stokes line center is stabilized, these spectral features are potentially significant for advanced lidar applications. For example, by using different gases and or pump wavelengths, 28 it may be possible to perform differential absorption lidar 29,30 (DIAL) for important atmospheric species such as water vapor. Furthermore, by constructing a long path-length notch filter using HCN in a receiver, it would be possible to separate molecular from aerosol backscatter.…”

Section: Discussionmentioning

confidence: 99%

Raman shifter optimized for lidar at a 15 μm wavelength

Spuler

Mayor

2007

Appl. Opt.

View full text Add to dashboard Cite

A Raman shifter is optimized for generating high-energy laser pulses at a 1.54 microm wavelength. A forward-scattering design is described, including details of the multiple pass and nonfocused optical design, Stokes injection seeding, and internal gas recirculation. First-Stokes conversion efficiencies up to 43%--equivalent to 62% photon conversion efficiency--were measured. Experimental results show output average power in excess of 17.5 W, pulse energies of 350 mJ at 50 Hz, with good beam quality (M2<6). Narrow bandwidth and tunable output is produced when pumping with a single longitudinal mode Nd:YAG laser and seeding the process with a Stokes wavelength narrowband laser diode.

show abstract

Section: Discussionmentioning

confidence: 99%

Raman shifter optimized for lidar at a 15 μm wavelength

Spuler

Mayor

2007

Appl. Opt.

View full text Add to dashboard Cite

show abstract

“…SBS and stimulated Raman scattering (SRS) are two important nonlinear processes. Generally, these two kinds of scattering are in competition [48][49][50][51][52][53]. If the pumped laser beam is multi-longitude mode with wide line width, the forward SRS (FSRS) will be dominant [54], and both SBS and backward SRS (BSRS) will be greatly suppressed.…”

Section: Introductionmentioning

confidence: 99%

Brillouin lidar and related basic physics

et al. 2009

View full text Add to dashboard Cite

The principle of a lidar based on Brillouin scattering is introduced. The basic physics of the Brillouin lidar is discussed. The applications of the Brillouin lidar in remote sensing of the ocean, such as measurement of the sound speed and the bulk viscosity of water and detecting submerged objects are investigated. An actual Brillouin lidar system is developed. Also, several basic problems related to Brillouin lidar are studied in detail. The attenuation coefficient of a pulsed laser beam with high pulsed energy in water is investigated; it is helpful to reveal the propagation property of a laser beam in water. The investigations on the threshold value of SBS are made theoretically and experimentally. Finally, a novel phenomena is investigated experimentally, in which Stimulated Raman scattering can be enhanced by stimulated Brillouin scattering.

show abstract

“…Gaseous Raman lasers have been well studied, as indicated by large numbers of reports in the literature [11][12][13]. Single-pass Raman laser systems have been designed to study the gain coefficients of the forward and backward SRS processes [1] as well as other properties [14].…”

Section: Introductionmentioning

confidence: 99%