Firstly, we observed the impact of a He-Ne laser
with different irradiation times on the growth and differentiation potential of the cultured cells, so as to identify the optimal treatment dosage for LPLI exerting maximal photobiostimulation on myoblasts.
Then, the experimental Raman spectra of R6G on each substrate were obtained by Raman spectrometer using 633 nm He-Ne laser
as the excitation source.
Switching time characteristics of the device, between colored and bleached states, were recorded with an automated setup consisting of a He-Ne laser
([lambda] = 632.8 nm), a Si photodetector and a custom made microprocessor controlled system.
Until now, no knowledge has been available pertaining to the histological study of He-Ne laser
treatment on mast cell morphometry in burned skin.
of California, Berkeley, have combined a 1-mW He-Ne laser
with a standard light microscope to create an instrument that has better z-axis resolution than any confocal microscope.
In particular, the damage was detected by three methods: plasma emission, He-Ne laser
scattering, and observation with CCD camera.
Figure 2 depicts the photoacoustic setup containing a He-Ne laser
(75 mW, 632.8 nm), a chopper, a mirror, a fluid cell, a microphone, a preamplifier, and a lock in amplifier.
Diffraction efficiency, defined as the ratio of diffracted to incident beam intensity, was probed with a nonpolarized low-power He-Ne laser
beam at 633 nm.
Photothermal measurement was performed with photothermal common-path interferometer by using a 2.0~2.5mW He-Ne laser
at 632.8 nm as probe light under the Nd-YAG laser excitation at 355 nm.
The grating formation process was monitored by a probe beam delivered from low-power He-Ne laser
operating at line [lambda] = 632.8 nm.