BlueMode – The Powerful Alternative to HeNe Lasers

TOPTICA’s BlueMode laser – high power and highest coherence at 405 nm.

For precision metrology, interferometry, Raman spectroscopy
Up to 50 mW single-frequency output
New: CHARM , active coherence stabilization
BlueMode wavelengths: 405 nm, 445 nm, 488 nm
New: GreenMode (515 nm) and RedMode (638 / 685 nm)
Excellent long-term power and wavelength stability
Optional single-mode fiber coupling, typ. 60% efficiency

A laser that is as easy to operate as a HeNe, but offers higher power and blue wavelengths too? TOPTICA’s BlueMode laser family might just be what you’re looking for. The lasers set new records in terms of power, coherence and wavelength stability. Equipped with CHARM, our unique coherence stabilization, mode hops are eliminated for good, making the laser an outstanding tool for measurement tasks in both scientific research and industrial applications.

Technical Information

Free-space output of TOPTICA’s BlueMode, GreenMode and RedMode lasers.

Wavelength stability (upper three traces) and fringe visibility contrast (bottom trace) of three BlueMode / RedMode lasers, with CHARM coherence stabilization. All of the lasers remain highly coherent, without any mode-hops or multi-mode emission intervals.

Specifications:

Model	BlueMode 405	BlueMode 445	BlueMode 488	GreenMode 515	Red Mode 638	Red Mode 685
Operation	cw, single (fixed) frequency
Wavelength	405 nm	443 nm	488 nm	514 nm	638 nm	685 nm
Wavelength tolerance	±3 nm			±2 nm	±1 nm	±3 nm
Wavelength selection	u.r., accuracy 1 nm
Wavelength tuning	No
Wavelength stability*	< 0.5 pm/h*, peak-peak
Linewidth	< 5 MHz (< 0.01 pm)
Coherence length	> 25 m
CHARM	Active coherence stabilization, optional
ASE suppression	40 dB typ.			35 dB typ.
Output power, free-space**	50 mW	30 mW	30 mW	25 mW	30 mW	25 mW
Output power, fiber coupled	25 mW	15mW	15mW	15 mW	15 mW	15 mW
Power stability*	Typ. < 0.5% (STD/mean) / h
Relative intensity noise	≤ -135 dB @ 50 kHz - 100 MHz
Polarization	Linear, > 100:1, 90° (free space version)
Beam profile	M² < 1.5 ( < 1.2 typ.)
Optical isolation	Built-in, > 30 dB
Laser head dimensions	240 x 90 x 90 mm³
Fiber coupling	Optional, typ. 60 % in SM fiber
Electronics	SYS DC110, 12” rack, optional with CharmControl SYS DC 110 Twin DL for operation of two laser heads
Warm-up time	< 10 min from standby
Environmental temperature (operating)	Range 15 – 30°C, stability ±3 °C
Environmental temperature (transport)	0 – 40°C
Humidity	Non condensing
Operating voltage	100..120 V / 220..240 V AC 50..60 Hz (auto detect)
Power consumption	Typ. < 70 W, max. 150 W (incl. CharmControl)

* with CHARM

** behind isolator

Options & Related Products

Options:

CHARM coherence stabilization
FiberDock fiber coupling
Twin Control electronics, for simultaneous operation of two BlueMode / RedMode lasers

Related Products:

DL 100: Economic Littrow type ECDL in modified Hänsch design
DL 100 / pro design : tunable, pro design ECDL at customized wavelengths
iBeam smart: Ultra-compact diode laser with highest power, low coherence
iWave: UV / blue diode laser with mm-range coherence

Technical Drawings

BlueMode
toptica_TD_BlueMode.pdf

Applications

TOPTICA’s BlueMode laser for interferometry, holography, Raman spectroscopy, quantum cryptography.

The combination of excellent long-term coherence stability and outstanding single-mode behavior, renders the laser a perfect fit for applications such as