XTRA II0 pages

INDUSTRY

XTRA II

Single-Frequency High Power Diode Laser

XTRA II
Supporting High-Resolution Raman Applications

Your Demand
High resolution Raman microscopy
requires lasers with three key features:
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Highest output power for optimized
Raman signal
Narrow linewidth for high spectral
resolution
TEM 00 beam for high spatial
resolution

Moreover, an extreme long-term
wavelength stability is a must to analyze
larger areas on a specimen. High ASE
suppression and circular beam profile
finally complement the specification
sheet for a perfect light source in Raman
applications.
Our Solution
The XTRA II meets all these demands,
providing 500 mW at 785 nm in a
TEM 00 beam with single-frequency
performance (linewidth < 10 MHz).
With its ASE suppression of more
than 40 dB the XTRA II supports the
important signal-to-noise discrimination.
The optimized optical design of the
XTRA II incorporates ‘pro’ technology,
a proprietary resonator design, proven
in the most demanding scientific
applications for many years. Designed
especially for Raman microscopy and
spectroscopy, it serves as a hands-off
operation module with RS 232 access
over all relevant laser parameters.

Extra Benefits
Many lasers suffer from optical feedback
and subsequently mode-hops or power
fluctuations. The XTRA II avoids such
drawbacks by using an integrated
optical isolator with 35 dB isolation
(60 dB version optional). The new laser
design separates the control electronics
form the optical laser head. Combined
with the separate power supply, the heat
generation inside the optical assembly
is reduced to a minimum, which leads
to an extremely stable operation. Active
thermal stabilization of the laser diode
ensures constant lasing condition and
supports high wavelength and power
stability.
Fiber Option
To provide full flexibility for OEM
integrators, single-mode fiber-coupling
is a standard option. Contrary to
competing multimode lasers, the XTRA II
achieves more than 250 mW output from
a single-mode polarization-maintaining
fiber. The fiber add-on consists of
TOPTICA‘s patented FiberDock and the
60 dB isolator option. Thus, highest
coupling efficiency combined with best
wavelength stability is guaranteed.

Raman Spectrum / Aspirin® Confocal Raman / Silicon

Applications
· Raman microscopy / spectroscopy
· Drug screening
· Chemical process control