405 nm SLM Laser

Item Code: 0405L-25A-NI-AT-NF
VBG Diode PM fiber
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405 nm single longitudinal mode (SLM) laser with polarization-maintaining (PM) fiber, tailor-made for Raman scattering and fluorescence applications. This laser, operating at lower power, emits a stable, narrow linewidth beam at a 405 nm wavelength, while its integrated PM fiber ensures the preservation of polarized light throughout your experiments. This makes it the ideal choice for research requiring both precision and polarization control. Its lower power output allows for gentle, controlled excitation without compromising on polarization, offering researchers an indispensable tool for delicate material analysis and biomolecular studies. Unleash the potential of your research with the accuracy and reliability provided by this laser, setting the stage for groundbreaking discoveries in these fields.

PM fiber-coupled SLM 405 nm laser is distinguished by a very good beam quality and homogeneity. Integrated power electronics and monolithic fiber attachment make this laser immune to thermal changes in the environment and the output delivers spatially filtered TEM00 polarized radiation.

By default, this type of laser is built with FC/APC connector, but other fiber terminations are available upon request. Details about non-standard connector and the fiber used with it should be discussed with the Integrated Optics sales team.

In optical systems with strong back-reflections (e.g. more than 10%), the laser must be protected by using an optical isolator with at least 20 dB isolation. Typical applications include interferometry, confocal microscopy (especially working with reflective samples), etc. Failure to comply with these requirements will render the warranty void for cases of COD (Catastrophic Optical Damage) of laser diode facets.

Fiber Termination - FC/APC (AT): 8° polishing angle minimizes back reflections from fiber tip. This is necessary especially for SLM lasers.

Last edited on: 25 January 2024
Parameter Minimum Value Typical Value Maximum Value
 Central wavelength, nm 404.5 405 405.4
 Spectral line width FWHM, MHz 1 - 20 60
 Output power, mW 2 - 20 -
 Power stability, % (RMS, 8 hrs) 3 0.02 0.1 0.5
 Power stability, % (peak-to-peak, 8 hrs) 4 0.1 1 2.5
 Intensity noise, % (RMS, 20 Hz to 20 MHz) 5 0.1 0.2 0.6
 Side-mode suppression ratio (SMSR), dB - 50 -
 Longitudinal modes - Single -
 Transversal modes - TEM00 -
 Polarization direction 6 - Aligned within the slow axis of the PM fiber and the key position. -
 Polarization extinction ratio (from PM fiber), dB 13 20 -
 Fiber - PM-S405-XP -
 Fiber length, m 0.95 1 1.1
 Control interface type 7 - UART -
 Operation mode 8 - APC (CW) -
 Modulation bandwidth, MHz 9 - N/A -
 Input voltage, VDC 4.8 5 5.3
 Input current, A - 1.5 -
 Max. power consumption, W 0.4 2 10
 Heat-sinking requirement, °C/W - 1 -
 Optimum heatsink temperature, °C 20 25 30
 Warm up time, mins (cold start) 0.2 1 2
 Temperature stabilization - Internal TEC -
 External fan control - Yes -
 Overheat protection - Yes -
 Dimensions (WxDxH), mm 10 - 50 x 30 x 18 -
 Storage temperature, °C (non-condensing) -10 - 50
 Net weight, kg 0.1 0.12 0.14
 Laser safety class - 3B -
 RoHS - Yes -
 CE compliance - - General Product Safety Directive (GPSD) 2001/95/EC
- (EMC) Directive 2004/108/EC
 OEM lasers are not compliant with - IEC60825-1:2014 (compliant using additional accessories) -
 Warranty, months (op. hrs) 11 - 14 (10000) -
 Country of origin - Lithuania -
 Spectral line width FWHM, pm 12 - 0.01 0.03

1 Measured with a scanning Fabry-Perot interferometer having 7.5 MHz resolution, with scanning frequency of about 10 Hz. Interferometer testing is not provided for each laser being manufactured, the standard test is OSA measurement with 20-30 pm resolution instead.

2 The output power of SLM lasers shall not be tuned and SLM performance is not guaranteed at power ratings other than factory preset. However, the power setting capability is not disabled. External attenuators are recommended instead.

3 The long term power test is carried out at constant laser body temperature (+/-0.1 ‎°C) using an optical power meter with an input bandwidth of 10 Hz. The actual measurement rate has a period of about 20 seconds to 1 minute.

4 The long term power test is carried out at constant laser body temperature (+/-0.1 ‎°C) using an optical power meter with an input bandwidth of 10 Hz. The actual measurement rate has a period of about 20 seconds to 1 minute.

5 Noise level is measured with a fast photodiode connected to an oscilloscope. The overall system bandwidth is from 2 kHz to 20 MHz.

6 With possible error of up to ±5°.

7 Break-out-boxes AM-C8 and AM-C3 can be used for conversion of UART communication to either USB or RS232.

8 APC - Automatic Power Control.

9 SLM lasers shall not be modulated - use external modulators instead.

10 Excluding control interface pins and an output window/fiber assembly.

11 Whichever occurs first. The laser has an integrated operational hours counter.

12 Converted from bandwidth value.

Typical spectrum

Typical spectrum of 0405 nm diode laser. Measured with 10 pm resolution.

Spectrum of 405 nm SLM Laser
Typical spectrum with an integrated clean-up filter

Typical spectrum of 0405 nm diode laser with an integrated clean-up filter. Measured with 10 pm resolution.

Spectrum of 405 nm SLM Laser with an integrated clean-up filter

The key dimensions of a fiber-coupled MatchBox.

Drawing of 405 nm SLM Laser
Typical Near Field

Near field beam profile of 405 nm SLM Laser
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