Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Alfred S. Kwok"'
Autor:
Anders G. Knospe, Alfred S. Kwok
Publikováno v:
Chemical Physics Letters. 390:130-135
We have observed broadening of the lasing spectrum of 60-μm diameter micrdroplet dye lasers. The spectral width of microdroplet dye lasers consisting of Rhodamine 6G or Pyrromethene 597 is essentially constant when water is used as a solvent but bro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb890e8fa6e89c510dcedd20038a3b64
https://doi.org/10.1016/j.cplett.2004.04.007
https://doi.org/10.1016/j.cplett.2004.04.007
Publikováno v:
Chemical Physics Letters. 213:309-314
Spectral broadening of the input-laser line and the stimulated Raman line have been observed in microdroplets of carbon disulfide, benzyl alcohol, toluene, chloroform and a binary mixture of carbon disulfide in ethanol. The broadening is asymmetrical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e357ed6535ace649192a263a36e2843e
https://doi.org/10.1016/0009-2614(93)85137-d
https://doi.org/10.1016/0009-2614(93)85137-d
Publikováno v:
Optics letters. 17(20)
Lasing is observed in laser-dye-doped ethanol droplets after two-photon absorption by the dye molecules. The two-photon-pumped lasing emission by the droplets is at a higher frequency than the input laser. Competitive nonlinear-optical effects that o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::546371c3801ac24586bb6a665829cbf4
https://pubmed.ncbi.nlm.nih.gov/19798205
https://pubmed.ncbi.nlm.nih.gov/19798205
Autor:
Richard K. Chang, Alfred S. Kwok
Publikováno v:
Optics letters. 17(18)
Fluorescence seeding by dissolving a fluorescent dye in a liquid droplet enhances the stimulated Raman scattering of a weaker-gain Raman mode. With the dye fluorescence at the Stokes wavelength of the weaker-gain Raman mode, the weaker-gain Raman mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28a8192eb009f4b0d54f366864e2acfe
https://pubmed.ncbi.nlm.nih.gov/19798151
https://pubmed.ncbi.nlm.nih.gov/19798151
Publikováno v:
Optics letters. 15(12)
Distortion, ejection, shattering, and propulsion of water and ethanol droplets containing Rhodamine 6G dye have been photographed at different time delays after initiation of a CO(2) laser pulse, whichcauses explosive vaporization of the droplets. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a624fe1f97331d8953925e6640cfd40
https://pubmed.ncbi.nlm.nih.gov/19768040
https://pubmed.ncbi.nlm.nih.gov/19768040
Autor:
Alfred S. Kwok, Perry G. Schiro
Publikováno v:
Optics express. 12(13)
We have observed whispering gallery modes in the inelastic emission from a 9.8 microm polystyrene bead coated with a monolayer of AlexaFluor 488 dye. Using a separate near-IR trapping laser and an Ar+ excitation laser enables us to isolate and study
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::941b6a8d5534013ad888609c3b50f1b0
https://pubmed.ncbi.nlm.nih.gov/19483800
https://pubmed.ncbi.nlm.nih.gov/19483800
Publikováno v:
Frontiers in Optics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cacbf196924546977328fe3a11e938b
https://doi.org/10.1364/fio.2003.tum5
https://doi.org/10.1364/fio.2003.tum5
The feasibility of using two photon induced fluorescence of amino acids is examined for its potential as a detection technique for biological aerosols. The research was motivated by the problem of spectral discrimination encountered in fluorescence a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2a4ccd353f8af61f8b5dc6fd1b5a1ee
https://doi.org/10.21236/ada310728
https://doi.org/10.21236/ada310728
Autor:
Alfred S. Kwok, Richard K. Chang
Publikováno v:
Nonlinear Optics: Materials, Fundamentals, and Applications.
Simulated Raman scattering (SRS), in the absence of external seeding, builds up from spontaneous Raman noise. When the pump-laser pulsewidth is much longer than the dephasing time of the vibrational relaxation, the SRS spectrum is dominated by the vi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9251f625e94c5fef6386eab2c34eda2
https://doi.org/10.1364/nlo.1992.fb6
https://doi.org/10.1364/nlo.1992.fb6