TA Deepstar® – Diode Lasers with Infinite Modulation Depth

Deepstar laser - diode laser with 100% modulation depth
Modulated diode lasers with 100% modulation depth for scientific and OEM use

Bluephoton® TA Deepstar® Series – 375 nm – 488 nm
Greenphoton® TA Deepstar® Series – 515 nm
Redphoton® TA Deepstar® Series – 635 nm – 1060 nm

Specifications TA Deepstar®-Models

Blue- / Greenphoton® TA Deepstar®

Redphoton® TA Deepstar®

Wavelengths & Powers
(other wavelengths and powers on request)

Single-Mode (SM):
375nm / 20mW
375nm / 70mW
395nm / 120mW
405nm / 55mW
405nm / 120mW
405nm / 300mW
415nm / 120mW
425nm / 120mW
445nm / 50mW
445nm / 100mW
457nm / 100mW
460nm / 100mW
473nm / 20mW
473nm / 80mW
473nm / 100mW
488nm / 20mW
488nm / 60mW
488nm / 80mW
488nm / 100mW
488nm / 150mW
488nm / 200mW
515nm / 25mW
515nm / 50mW
515nm / 80mW
Multi-Mode (MM):
375nm / 200mW (M² = 7...8)
405nm / 400mW (M² = 5...6)
445nm / 500mW (M² = 2...3)

Single-Mode (SM):
635nm / 5mW
637nm / 150mW
639nm / 40mW
643nm / 150mW
647nm / 150mW
658nm / 130mW
670nm / 15mW
685nm / 35mW
705nm / 40mW
730nm / 40mW
785nm / 120mW
808nm / 200mW
830nm / 200mW
852nm / 150mW
980nm / 150mW
1016nm / 100mW
1060nm / 100mW
Multi-Mode (MM):
638nm / 250mW
and much more

Beam diameter
(other diameters on request)

1.25mm (1/e²) +/- 0.25mm
(MM beam diameter may vary)

1.25mm (1/e²) +/- 0.25mm
(MM beam diameter may vary)

Beam quality M²

<1.2 (SM)
<6 (MM)

<1.2 (SM)
<6 (MM)

Astigmatism (corrected)



Beam ellipticity

<1.1:1 (SM)

<1.1:1 (SM)


>100:1 vertical

>100:1 vertical

Power stability

<0.5% / h

<0.5% / h

Noise 0Hz-100MHz

<0.5% peak<>peak (CW)

<0.5% peak<>peak (CW)

Modulation speed

Analog: up to 15MHz @ -3dB
Digital: >150MHz

Modulation input signals

Analog: 0...1V / 50 Ohm (15MHz) or
Analog: 0...5V / 10 kOhm (>5MHz)
Digital: 0...1V / 50 Ohm with prog. Trigger-Level (>150MHz) or
Digital: 0...5V / 200 Ohm with prog. Trigger-Level (>100MHz)

Rise- and falltime

Analog: <25ns
Digital: <1ns

Modulation depth

> 2.500.000:1

Supply voltage

24VDC, 2 Amp.


Safety- Interlock
RS-232 Interface


LDM.COL - collimator objective
LDM.FOC - customized focussing objective
LDM.FASY.XXX - fibre coupling unit
LDM.AAC - Automatic Aging Compensation
LDM.24VPSU - worldwide power supply unit
LDM.MON - high-speed light monitoring

The diode lasers of the Bluephoton® / Greenphoton® / Redphoton® TA Deepstar® Series are temperature-stabilized lasing diode modules with modulation inputs for up to 150 MHz digital modulation (On/Off) and up to 15 MHz analog modulation (power control) with 100% modulation capability. Since diode lasers, which are capable of modulation, are usually modulated between the laser threshold and their maximum power, diode lasers also still emit some laser power and/or fluorescent light in the “Off moment”. Since this residual lighting cannot be tolerated for applications such as confocal microscopy or microlithography, the TA Deepstar® technology was developed, which eliminates this residual light and enables modulation depths of > 2.500.000:1. The digital modulation input can be implemented either as 0 … 1 V / 50 Ohm RF input or as TTL input. The digital trigger level (switching threshold) is programmable in 1 millivolt increments. The analog modulation input can be adapted to customer preferences both in its voltage, as well as in its impedance value. (0 … 5 V, standard 1 kOhm). The extremely short rise and fall times of the digital modulation of <1 ns (nanoseconds) enable precise switching of the laser light in extremely fast processes. Through the possibility of fast analog modulation with up to 15 MHz @ -3 dB, the laser can furthermore carry out very fast power variations. As a result of their intelligent laser controller with interface RS-232, these lasers can be integrated seamlessly into applications and controlled. Through the standardized Command Line Interface (CLI), you have at all times full control of all parameters of the laser, such as e.g. laser diode temperature, laser powers and currents, operating modes and lots more. The systems consist of a laser head and a laser controller in the EMC-screened modular housing with 24 V DC supply voltage input, according to industrial standard. As in case of all lasers of the Bluephoton® and Redphoton® Series, the laser head can be very simply adapted to customer specifications by the use of the modular principle.

Press Releases

DEEPSTAR® - Diode lasers with infinite modulation depth


Omicron-Laserage Laserprodukte GmbH
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63110 Rodgau-Dudenhofen