405nm 35mW Coherence Length 1m High-Stability Compact Wavelength-Locked Laser System

405nm 35mW Coherence Length 1m High-Stability Compact Wavelength-Locked Laser System

This is a high-wavelength-stability compact laser system for Raman spectroscopy and high-resolution applications. The system provides exceptionally stable single-mode laser emission at 405 nm, with a coherence length of up to 1 m, a typical side‑mode suppression ratio of 40 dB, and wavelength stability better than 0.001 nm. In addition, customisation according to wavelength or output power is available upon request.

Product features：Exceptional wavelength stability <0.015 nm；Coherence length up to 1 m；Output power up to 35 mW；Excellent beam quality and stability；Temperature stabilised；Low cost, high cost-effectiveness

Part Number：MP-WLOK-405-35-1

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Main parameters
General Parameters
Optional Configurations
Downloads

Main parameters

Core parameters

Center Wavelength Output Power

405nm 35mW

Dimension Drawing

General Parameters

Wavelength	Max. Output Power	Spectral Linewidth*³	Coherence Distance*³
405 nm	12,25,40 mW	<160 MHz/0.1 pm	>1.0 m
633 nm	40,70 mW	<20 MHz/0.05 pm	>10,0 m
638,640 nm	32mW	<300 MHz/0.5 pm	>1.0 m
638 nm	120 mW	<150 MHz/0.2 pm	>2.0m
658 nm	35 mW	<300 MHz/0.5 pm	>1.0m
685,690 nm	45 mW	<100 MHz/0.2 pm	>3.0m
785 nm	80,100mW	<50 MHz/0.1 pm	>3.0m
785 nm	175,225 mW	<12 MHz/0.1 pm	>10.0 m
785nm	500¹2mw	<66 GHz/0.15 nm	>4,0 mm
785 nm	75 mW	<50 GHz/0.1 nm	>0.6 cm
785 nm	100 mW	<50 GHz/0.1 nm	>0.6 cm
808 nm	120 mW	<50 MHz/0.1 pm	>3.0m
830 nm	500¹2mW	<66 GHz/0.15 nm	>4.0 mm

*Note: *¹ Transverse multimode.

*² Water chiller recommended.

*³ Continuous operation at maximum output power.

Beam Quality and Dimensional Parameters
Parameter	Value
Beam diameter	1.1 × 2.2 to 1.2 × 2.8 mm
Divergence angle	<1.2 mrad
Spatial beam mode	TEM00 (except for multimode lasers)
Polarisation	Linear polarisation >100:1 typical
Beam collimation	<5 mrad and <0.1 mm
Pointing stability	<5 µrad/K
Noise	<2 % RMS
Power stability	<1 % (10 h)
Temperature control precision	<10 mK
Warm‑up time	5 s after ready‑to‑use; 3 min after calibration
Drive mode	Active current control
Modulation mode*	Adjustable constant power, analogue and digital external modulation up to 1.5 MHz
Control mode	Via USB; optional remote controller
CDRH classification	3b, 4 (for laser output >500 mW)
Dimensions	63.5 × 31.0 × 32.5 mm
Weight	94 g (laser head)
Operating temperature	0 °C to 45 °C (non‑condensing)
Storage temperature	–25 °C to 70 °C

*Note:*¹ Modulation may reduce beam quality and stability

.*² The actual emission wavelength may deviate from the specified wavelength by up to ±1 nm.

Power Supply Control

This laser requires a laser controller to provide power and control all operating parameters. For scientific applications, we recommend our power supply controller. For industrial integration, we also offer a highly compact power box that connects directly to the laser head or via a custom cable.

Power Supply Controller – Technical Specifications

Parameter	Specification
Modulation input	Analogue and digital 0‑5 VDC
Modulation frequency	up to 0.5 MHz
Digital interface	USB×1 (RS‑232 optional)
Control inputs	Interlock, keyswitch, modulation mode switch
Cable length	80 cm (default)
Power consumption	12 VDC, up to 2 A (depending on laser output power)
AC input	100‑240 VAC, 50‑60 Hz
Dimensions	85.0×85.0×32.5 mm
Weight	416 g

Compact Power Box

Modulation input	Analogue and digital 0‑5 VDC
Modulation frequency	up to 1.5 MHz
Digital interface	USB×1 (RS‑232 optional)
Control inputs	Interlock
Cable length	80 cm (default)
Power consumption	12‑36 VDC, up to 2 A (depending on laser output power)
Dimensions	39.0×31.0×32.5 mm
Weight	69 g

Options and Accessories

Beam diameter calibration	Water‑cooled baseplate
Polarisation > 10000:1	Remote control RC‑1 for power controller
Optomechanical shutter	RS‑232 interface optional
Wavelength selection	Fibre coupler

Control Software

Typical power stability curve

Optional Configurations

Downloads

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Product title: 405nm 35mW Coherence Length 1m High-Stability Compact Wavelength-Locked Laser System

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