www.kimmon.com
Phone: 81 3 5248 4820
Fax: 81 3 5248 0021
High-Specifcation
CW Fiber Laser
for Research
APPLICATIONS
Î Laser for SHG/THG
Î 3-D Printing
Î Micro Processing
Î Measurement
Î Graphic Imaging
Î Printing (CtP)
Î Soldering
Î Marking
Î Sensing
KIMMON KOHA
• Wavelength 1064nm
• Polarization Ratio >250: 1
• Rated Power >20W
➲Your Application Here
Fiber Laser KKFL- 20
Wavelength (Å)
Intensity (a.u.)
1.75 1.70 1.65 1. 60 1. 55 1. 50
20
15
10
He-like Ni
Li-like Ni
Nanowires
Ni Kα
Flat × 5
5
0
Fermionics
4555 Runway St. • Simi Valley, CA 93063
Tel (805) 582-0155 • Fax (805) 582-1623
www.fermionics.com
• Analog bandwidth to 8 GHz.
• FC, SC, and ST receptacles.
• Active diameter from 50 µm to 5 mm.
• Standard and custom ceramic submounts.
• TO-style packages available with flat
AR-coated windows, ball lens and dome lens.
• Standard axial pigtail packages and
miniature ceramic pigtail packages, all
available with low back-reflection fiber.
Communications
Opto-Technology
Medical
Instrumentation
Imaging / Sensing
nanospheres, and nanowires, have been
successfully used to increase absorption
of laser radiation, as evidenced by the ob-
servation of enhanced x-ray emission (see
references 18-24 in B. Bargsten et al., Sci.
Adv., 3, 1, e1601558 [2017]). Nevertheless,
arrays of high-aspect-ratio aligned nanowires separated by vacant gaps are unique
in allowing volumetric heating by deep
penetration of femtosecond optical laser
pulses of relativistic intensity into near-sol-
id-density material.
In the irradiation process, electrons are
ripped from the surface of the nanowires
by the intense laser field that accelerates
them into the gaps between the wires to
acquire high energy. Electron collisions
with the nanowires heat the material to
extreme temperatures, causing the nanow-
ires to explode, rapidly filling the gaps
with plasma. When the gaps are filled, a
continuous, critical electron density layer
is formed that forbids further coupling of
laser energy into the material.
The use of femtosecond laser pulses of
relativistic intensity allows for very efficient coupling of energy deep into the
nanowire array, heating a large volume
of near solid-density material several mi-
crons in depth to multi-kiloelectronvolt
FIGURE 2. Single-shot x-ray spectra of
nickel (Ni) nanowires irradiated at an intensity
of 5 × 1018 W/cm2 are compared to that from
a flat polished Ni target (with 10X magnified
scale). (Adapted from M. Purvis et al. 4)
