780 nm lasers for Brillouin microscopy
Ultra-low noise, narrow linewidth DPSS lasers delivering the spectral purity needed to reveal weak and complex Brillouin scattering
Brillouin microscopy demands a laser with no spectral compromises. Skylark DPSS laser systems deliver inherently low ASE, a single longitudinal mode, and ultra-stable output without additional noise suppression.
The Skylark 780 laser system provides up to 400 mW at 780.24 nm, < −80 dB ASE, and ≤ 300 kHz linewidth for a range of Brillouin applications.
780 nm
up to 400 mW
Skylark 780
780 nm single frequency DPSS NIR laser
785 nm
up to 400 mW
Skylark 785
785 nm single frequency DPSS NIR laser
Low ASE noise
< - 80 dB
Clean beam
M² ≤ 1.1
Stable output
± 0.2 pm
Maintains ± 0.2 pm wavelength stability over 10s of hours, ensuring spectral integrity for precision applications.
Skylark Lasers outperform market leaders for Brillouin microscopy applications
Skylark NIR DPSS lasers combine efficient high power with spectral purity from a low-loss, high conversion cavity design. Delivering ultra-stable output with a narrow linewidth, the Skylark 780 and Skylark 785 laser systems provide a clean beam with low ASE noise < – 80 dB without filters or mode cleaning.
Low ASE noise
Inherently low ASE noise without additional suppression measures like filters, gratings, and gas cells; with customers reporting < −70 dB, 15 GHz from the main laser line.
Narrow linewidth
Reduces spectral broadening, leading to better signal resolution, SNR, and sharper peaks.
High power
Delivers efficient NIR light at 780.24 nm, with ample power margin for complex optical paths.
Ultra-stable output
Consistent wavelength output and power intensity to reduce measurement fluctuations.
DPSS architecture delivers inherently lower noise and a cleaner beam than amplified diode systems — without filters, gratings, or noise suppression.
Amplified diode and fibre-amplified laser systems introduce ASE and intensity noise that must be managed with external filters, gas cells, or active noise suppression — adding cost, alignment, and failure modes to every setup.
The Skylark 780 laser system achieves < − 80 dB ASE inherently, without any supplementary optics. The result is a cleaner spectral profile at source and a simpler, more reliable instrument.
Low noise DPSS lasers for Brillouin light scattering applications
Brillouin light scattering (BLS) microscopy is a non-invasive optical technique that probes the mechanical properties of materials by measuring frequency shifts in scattered light. As the signals are weak and highly sensitive, BLS demands lasers that deliver high performance.
Parameters such as linewidth, frequency stability, spectral purity, wavelength, and compatibility with Rayleigh suppression directly determine the clarity and reproducibility of Brillouin spectra. The Skylark 780 DPSS laser is engineered to meet these requirements, enabling accurate mapping of mechanical properties such as elasticity, viscosity, acoustic velocity, and density with minimal artefacts, less setup complexity, and higher confidence in results.
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