HAMAMATSU semiconductor laser L11038-11

HAMAMATSU's L11038-11 is a high-precision, low-noise semiconductor laser module, mainly used in optical measurement, biomedical imaging, industrial sensing and other fields. Its core features are high stability, narrow linewidth and low noise, suitable for application scenarios with high requirements on light source quality.

1. Core functions and effects

(1) Main functions

High-stability laser output: stable wavelength, suitable for precision optical measurement.

Low-noise design: reduces signal interference and improves signal-to-noise ratio (SNR).

Narrow linewidth (single longitudinal mode): suitable for applications such as spectral analysis and interferometry.

Modulation function: supports analog/digital modulation (optional), suitable for pulse or continuous operation mode.

(2) Typical applications

Optical measurement (laser interferometer, spectral analysis)

Biomedicine (flow cytometer, confocal microscope)

Industrial sensing (laser ranging, surface defect detection)

Scientific research (quantum optics, cold atom experiments)

2. Key specifications

Parameters L11038-11 Specifications

Laser type Semiconductor laser (LD)

Wavelength Optional according to model (such as 405nm, 635nm, 785nm, etc.)

Output power Several mW~100mW (adjustable)

Linewidth <1MHz (narrow linewidth, single longitudinal mode)

Noise level Very low (RMS noise <0.5%)

Modulation bandwidth Up to MHz level (supports TTL/analog modulation)

Working mode CW (continuous) / pulse (optional)

Power supply voltage 5V DC or 12V DC (depending on model)

Interface SMA fiber interface / free space output

3. Technical advantages

(1) High wavelength stability

Adopt Temperature control (TEC) technology ensures minimal wavelength drift, suitable for high-precision optical experiments.

(2) Low noise & high signal-to-noise ratio

Optimized circuit design reduces current fluctuations, suitable for weak signal detection (such as fluorescence excitation).

(3) Narrow linewidth (single longitudinal mode)

Suitable for applications requiring high coherence such as interferometry and Raman spectroscopy.

(4) Flexible modulation function

Supports external modulation (TTL/analog signal), which can adapt to different experimental needs.

4. Comparison of competitive advantages

Features HAMAMATSU L11038-11 Ordinary semiconductor laser

Wavelength stability ±0.01nm (temperature control optimization) ±0.1nm (no temperature control)

Noise level <0.5% RMS 1%~5% RMS

Linewidth <1MHz (single longitudinal mode) Multi-longitudinal mode (wide spectrum)

Application areas High-precision optical measurement, biomedicine General laser indication, simple sensing

5. Applicable industries

Biomedicine (flow cytometry, DNA sequencing)

Industrial detection (laser ranging, surface morphology analysis)

Scientific research experiments (cold atomic physics, quantum optics)

Optical instruments (interferometer, spectrometer)

6. Summary

The core value of HAMAMATSU L11038-11:

High stability + narrow linewidth, suitable for precision optical measurement.

Low noise design, improve signal-to-noise ratio (SNR).

Temperature control optimization, minimal wavelength drift.

Support external modulation, adapt to a variety of experimental needs