Lasers, laser systems and laser equipment
Laser Products Gallery
New lasers and laser systems
Autoscanned CW narrow-line ultra-wide-tunable laser, model "T&D-scan"
UV-blue-green single-frequency tunable laser system, model "Tisarius-D"
High-energy Yb-based all-fiber fs-ps-ns laser, model "Ytterbius-Master"
CW single-frequency tunable laser systems with high-precision scanning of radiation line
CW single-frequency ring Ti:Sapphire lasers
CW single-frequency ring Dye lasers
CW ultra-wide-tunable laser systems with narrow line and intracavity frequency doubling
CW linear Ti:Sapphire laser, model "TIS-FD-08"
CW linear Dye laser, model "DYE-FD-08" and "Ametist-FD-08"
Yb Fiber lasers: ultra-short pulses (femtosecond, picosecond, nanosecond),
all-fiber design, high energy, wavelength range 1050-1150 nm with
possibilities of obtaining pulses at another wavelengths (doubling,
Raman & parametric conversion)
Er Fiber lasers: femtosecond pulses, all-fiber design, wavelength range
1540-1580 nm with possibilities of obtaining pulses at another wavelengths
(doubling, Raman & parametric conversion)
Yb & Er Fiber amplifiers for spectral ranges of 1050-1150 / 1550-1620 nm
and Raman fiber amplifires
CW hybrid tunable laser systems (Solid-state / Dye)
Femtosecond solid-state lasers
Femtosecond Yb:KYW laser, model "Femto-Star"
Femtosecond Ti:Sapphire laser, model "FEMoS"
Resonant Frequency Doubler for CW single-frequency lasers, model "FD-SF-07"
Femtosecond auto-correlator, model "FS-PS-Auto"
- Single-frequency laser - laser whose output radiation spectrum contains only
one frequency. Line width of radiation from such laser is determined by
instabilities of the generation frequency value arising because of various
external or internal perturbations of the laser resonator (mechanical,
acoustic, etc.). Line width of output from a single-frequency laser can be
significantly (by one, two, and more orders of magnitude) reduced by using a
system of stabilisation of the laser generation frequency. Such a system must
include a stable spectral reference, such as a transmission peak of an optical
interferometer, atomic absorption line, etc. onto which the laser output
radiation is locked. Normally, stabilisation of the laser generation frequency
reduces both short-term frequency jitter and its long-term drift. See also:
- Computer-controlled tuneable laser system - laser apparatus, in which the
wavelength of output radiation can be changed by a computer in a broad range
according to a user-specified program. The output wavelength is controlled
through spectrally selective optical elements with electro-mechanical drive
installed in the laser cavity. Control signals from the computer are fed into
these drives through a special hardware interface. For laser wavelength
measurement in such systems usually a high-precision fast wavelength meter is
included. See also:
tunable lasers (book),
- Femtosecond laser - laser generating ultra-short light pulses. As a rule,
such pulses are generated in
mode-locked regime at
a high repetition rate in the range of
1 MHz - 3 GHz. Femtosecond pulses with durations of dozens and hundreds of
femtoseconds can be available both from solid-state and all-fibre lasers,
as well as from hybrid fibre/bulk laser systems. Owing to relatively high
peak output power of femtosecond pulses they can be quite easily spectrally
transformed with different methods of non-linear optics (parametric generation,
second-harmonic generation, etc.). See also:
- Titanium-sapphire (Ti:Sa) laser -
solid-state laser, in which a sapphire
(Al2O3) single crystal containing a certain amount of titanium-ion impurities
(Ti3+) is used as its active medium. Such lasers feature very broad working
spectral range (690-1100 nm). Ti:Sa laser requires powerful
optical pumping in
the visible green spectrum range. An Nd:YVO4 laser with frequency doubling
may be used as a pumping source for titanium-sapphire lasers. See also:
- Fibre laser - a laser whose resonant cavity is formed by an optical fibre.
Radiation of such laser is entirely or partially generated within this fibre.
In implementations where the radiation path is entirely contained in the
optical fibre are usually called all-fibre designs. In cases where a part of
the radiation path goes through free space or optical elements other than
fibres such lasers are called hybrid or fibre/bulk. Fibre lasers are suitable
for both generation of continuous radiation and ultra-short (femtosecond,
picosecond) light pulses. See also:
how fibre lasers work,
- Dye laser - liquid-based laser, in which a solution of an organic dye formed
into a fast jet acts as the active medium. Working spectral range of such laser
using one dye solution amounts to 50-100 nm, however the whole visible spectrum
range can be covered by using different dyes. The most common spectral ranges
of dye jet lasers are 550-700 nm and 275-350 nm, the latter being accessible
through extra- or intra-cavity frequency doubling of the fundamental output
radiation of the dye laser. Modern manufacturing technology and design of dye
jet lasers developed at Tekhnoscan provide almost the same level of ease and
comfort of operation as with solid-state lasers. Moreover, the Company also
offers combined models of tuneable lasers, which can be configured as both dye
jet laser and a titanium-sapphire laser. See also:
- Resonant frequency doubler for continuous-wave (CW) single-frequency lasers -
laser accessory for doubling of optical radiation frequency by use of a
non-linear crystal installed in an independent (external) high-Q optical
resonator. Second-harmonic generation efficiency of such doublers is fairly
high for CW radiation and reaches 25-40% at the input radiation power of 1 W.
Resonant frequency doubler is a very useful addition to a CW single-frequency
laser, allowing efficient conversion of its radiation into a shorter-wavelength
range. See also:
second harmonic generation,
- Autocorrelator - measurement device for determination of duration of
ultra-fast (femtosecond, picosecond) laser pulses. An autocorrelator consists
of a scanned
Michelson interferometer and a non-linear photo-detector.
Usually autocorrelation functions taken from laser pulses are recorded
and processed in a computer. Autocorrelators manufactured by Tekhnoscan can be
used for measurements of both femtosecond and picosecond radiation pulses. See also:
- Ytterbium fibre laser - laser, in
optical fibre doped with
ytterbium ions serves as the active medium.
Mode locking of the output
generated by laser "Ytterbius-Master" occurs due to
non-linear polarisation rotation of laser radiation as it propagates along the optical fibre.
This method offers an advantage over the traditional mode-locking technique
using a saturable absorber in allowing substantially higher peak powers and
pulse energies in the laser output. The unique design of fibre laser
"Ytterbius-Master" provides means to generate both femtosecond radiation
pulses and pico- or nano-second pulses with record-high energies. In its
all-fibre version this laser only contains fibre optical elements and no
may also be used for further amplifying power/energy of output laser pulses. See also:
ytterbium-doped gain media
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