TopWave DUV laser system by TOPTICA with DLC pro control unit on a black reflective surface.

TopWave 257

Industrial cw UV Lasers

  • 15 mW @ 257 nm
  • Excellent lifetime (> 10000 h)
  • Turnkey, highly efficient gas laser replacement
  • Consistent, diffraction limited beam quality (M² < 1.3) over full lifetime
  • Sealed doubling cavity with automatic crystal shifter

Matching the wavelength of legacy, frequency-doubled Argon Ion lasers, the TopWave 257 is an exciting new choice for deep UV applications in semicon inspection and optics testing, where only lower optical output power is required, or even appreciated.

The future-proof concept of the TopWave 257 is far ahead of the outdated gas laser systems in terms of environmental friendliness and operating costs. Due to its high wall-plug efficiency, it does not require massive water-cooling and the power consumption is less than 1% of a gas laser, resulting in over 99.9% savings in utility costs.

The compact footprint and low heat dissipation of the TopWave 257 laser head allow for easy integration in space restricted and temperature sensitive application environments. Comfortable, hands-off operation over the system lifetime (typ. 10,000 hrs) is ensured by fully automated optimization routines for the internal opto-mechanics. In order to provide best reliability and consistent, diffraction limited beam quality (M² < 1.3), the complete UV beam path is enclosed in a specially sealed compartment.

With its state-of-the-art laser controller the TopWave 257 offers a wide range of options for operation. While laboratory users might prefer the controller's easy to use touchscreen interface or the TOPAS PC GUI, system integrators will appreciate the comprehensive command language that enables smooth integration with central control software.

  • Specification

    Laser Specifications TopWave 257-015
    Output power 15 mW
    Wavelength 257 nm ± 0.5 nm
    Linewidth < 1 MHz

    Beam waist diameter @ 1m (1/e²) 0.4 mm ± 0.2 mm
    Beam divergence (full-angle) < 1.2 mrad
    Ellipticity 0.9 - 1.1
    Beam pointing stability (1) < ± 5 µrad
    Transverse Mode TEM00
    M² x < 1.3, M² y < 1.3
    Polarization linear, vertical < ± 3°
    Polarization extinction ratio > 200 : 1
    Power stability < 2 % over 8 h
    RMS noise < 1 % (10 Hz - 10 MHz)
    Lifetime(2) (min. / typ.) 3,000 h / 10,000 h
    Utility and Environmental Specifications
    Laser head dimensions 135 x 295 x 470 mm³ (H x W x D)
    Control unit dimensions 154 x 378 x 448 mm³ (H x W x D)
    Umbilical length 2 m
    Temperature range
    Operating 20 °C to 30 °C, stabilized to ± 1 °C, non-condensing
    Storage & shipping -10 to + 50 °C, non-condensing
    Cooling requirements
    Laser head Conduction (3)
    Control unit Convection
    Line voltage AC 100-240 V 50 / 60 Hz
    Power consumption < 250 W (typ. < 120 W)
    Communication interface Ethernet, USB

    (1) RMS over 8h @ ambient temperature drift less than ± 1 K
    (2) With optics shifts
    (3) Sufficient heat sink has to be provided. Optional cooling plate with closed loop chiller available upon request

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