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Green and ultraviolet pulse generation with a compact, fiber laser, chirped-pulse amplification system for aerosol fluorescence measurements
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10.1063/1.3488363
/content/aip/journal/rsi/81/10/10.1063/1.3488363
http://aip.metastore.ingenta.com/content/aip/journal/rsi/81/10/10.1063/1.3488363
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic diagram of the laser system. The solid line represents the optical path through optical fibers and the dashed line represents the beam path through free space. , fiber, volume Bragg grating, controller, triborate crystal, and barium borate crystal.

Image of FIG. 2.
FIG. 2.

Laser configuration (c) and typical output pulse (a) autocorrelation and (b) spectrum. , , beam splitter, filter, and .

Image of FIG. 3.
FIG. 3.

Chirped-pulse amplification setup. The stretched pulse is detected by a fast photodetector and measured with an oscilloscope. The compressed pulse is measured with an intensity autocorrelator and the spectrum is characterized with an optical spectrum analyzer. , fiber, volume Bragg grating, and controller.

Image of FIG. 4.
FIG. 4.

Power amplifier performance. The plot shows the measured output power vs the input pump power. The input pump power is calculated based on the drive current and efficiency of the laser diode.

Image of FIG. 5.
FIG. 5.

Characteristic spectral reflection response of the chirped volume holographic Bragg grating.

Image of FIG. 6.
FIG. 6.

Reflected power performance of the chirped volume holographic Bragg grating. The reflected power is of the incident power.

Image of FIG. 7.
FIG. 7.

Performance of the second harmonic generation process. (a) Measured converted power at 525 nm vs measured input power at 1050 nm and (b) Calculated conversion efficiency vs input power.

Image of FIG. 8.
FIG. 8.

The optical spectrum of the 525 nm pulses. The FWHM width is .

Image of FIG. 9.
FIG. 9.

Performance of the UV generation process. (a) Measured converted power at 262 nm vs measured input power at 525 nm and (b) Calculated conversion efficiency vs input power.

Image of FIG. 10.
FIG. 10.

The optical spectrum of the 262 nm pulses. The FWHM width is .

Image of FIG. 11.
FIG. 11.

Beam intensity profile of the (a) 525 nm wavelength pulses and (b) 262 nm wavelength pulses.

Image of FIG. 12.
FIG. 12.

The fluorescence emission (top) and elastic scatter signal (bottom) as a NaCl particle doped with tryptophan traverses through the UV excitation beam.

Image of FIG. 13.
FIG. 13.

The fluorescence emission in the 400–500 nm band vs in the 500–600 nm band for 2 (green dots), 3 (red dots), and (blue dots) dye-doped PSL particles.

Image of FIG. 14.
FIG. 14.

The fluorescence emission in the 300–340 nm band vs in the 360–400 nm band for Bacillus Globigii (gray dots) and ovalbumin (black dots).

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/content/aip/journal/rsi/81/10/10.1063/1.3488363
2010-10-20
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Green and ultraviolet pulse generation with a compact, fiber laser, chirped-pulse amplification system for aerosol fluorescence measurements
http://aip.metastore.ingenta.com/content/aip/journal/rsi/81/10/10.1063/1.3488363
10.1063/1.3488363
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