Diode Laser Modules
Features: RBA-Series Diode-Pumped Nd:YAG Laser Modules (10W - 100W)
  • High Power
  • Reliable
  • Efficient
  • Compact Design
  • Easy to use
  • Affordable


  • The RBA-Series diode pumped laser module has quickly become an industry standard; thousands of these workhorse components are in use around the world. They have proven themselves to be a reliable, high-performance component in DPSS laser systems. The RBA is a second-generation model that includes new features that make it even easier to integrate and service. The RBA Diode-Pumped Laser Module is offered at power levels up to 100 Watts in a simple, compact, and affordable package.
    The RBA module is an ideal building block in the development or production of medium power rod laser systems, conversion of existing lamp-based laser designs to diode-pumping, or retrofit of existing arc lamp hardware to provide more stable and reliable operation.
    The pump module is completely maintenance-free. It incorporates a Nd:YAG laser rod that is efficiently pumped by a radial array of long life laser diode bars, and delivers excellent gain uniformity and lensing performance. It is ideally suited for multimode applications such as laser marking, and can also provide high beam quality for more precise micro-machining and scientific applications.
    The RBA is driven by low voltage electronics. Cooling of the laser is accomplished with a simple recirculating water chiller running on filtered water, eliminating the need for deionized water systems.
    Model Rod Type Output Power4 Diode Bias Voltage5 Drive Current5 Recommended Driver
    RBA20-0.33C2 2mm, YAG1 10 W 6VDC 0-38A (25A nominal) LDD3006
    LDD-250-30-06OEM
    RBA20-0.66C2 2mm, YAG1 20 W 12VDC 0-38A (25A nominal) LDD3012
    LDD-600-30-12OEM
    RBA20-1C2 2mm, YAG1 35 W(TEM00) 18VDC 0-38A (25A nominal) LDD3018
    LDD-600-30-18OEM
    RBA30-1C2 3mm, YAG1 50 W 18VDC 0-38A (25A nominal) LDD3018
    LDD-600-30-18OEM
    RBA30-1C2 3mm, YLF1 25 W 18VDC 0-32A (20A nominal) LDD3018
    LDD-600-30-18OEM
    RBA24-1C2 2mm, YAG1 50 W(TEM00) 24VDC 0-38A (25A nominal) LDD2524
    LDD-1000-30-24OEM
    RBA34-1C2 3mm, YAG2 75 W 24VDC 0-38A (25A nominal) LDD2524
    LDD-1000-30-24OEM
    RBA35-1C2 3mm, YAG3 100 W 30VDC 0-38A (25A nominal) LDD3030
    LDD-1000-30-30OEM
    1 Rod length is 63 mm with flat/flat faces and 0.6% Nd doping.
    2 Rod length is 73 mm with flat/flat faces and 0.6% Nd doping.
    3 Rod length is 83 mm with flat/flat faces and 0.6% Nd doping.
    4 Minimum 1064 nm multi-mode output in a short cavity (165 5 mm, 0.75mCC HR/flat 80%R OC, 90%R for RBA20-0.33C4) CW oscillator, at a maxiumum 25A drive current, arrangement at delivery.
    5 Required voltage at the pump head stated w/o consideration for inefficiencies in the electrical system. Your DC power supply should be oversized by 30% to allow for these inefficiencies.
    ** Pulsed versions available.
    Mechanical Drawings

    RBA24 & RBA34

    RBA35

    All versions except RBA34, RBA24 & RBA35

    Relay Image of Fluorescence

    Laser power

    Thermal lensing

    Small signal gain

    Flow rate vs pressure drop
    More Detailed Descriptions of Model Number: RBA30-1C2-FA1
    RBA New version module replacing old RB
    30 Rod diameter (20=2.0 mm, 30 = 3.0 mm, etc.)
    1 1 diode bar per ASM (this is a 2 if 2 diodes are used) and 3 ASM per heat exchanger and there are 3 heat exchanger for a total of 9, 20W bars = 180W of diode pump power
    C CW (this is a P if the module uses pulsed bars)
    2 20W diode bar is used (this is a 4 if a 40W bar is used)
    F Flat rod faces are used (this is a C if curves are used)
    A Rod dopant of 0.6% (some pulsed modules use a 1% dopant and E is used)
    1 Standard temperature testing
    A less common module is the RBA20-0.33C2-FA1 and the RBA20-0.66C2-FA1
    More Detailed Descriptions of Model Number: RBA20-0.33C2-FA1
    RBA New version module replacing old RB
    20 Rod diameter (20=2.0 mm, 30 = 3.0 mm, etc.)
    0.33 1 diode bar per ASM but only 1 ASM per heat exchanger. There are 3 heat exchanger for a total of 3, 20W bars = 60W of diode pump power
    C CW (this is a P if the module uses pulsed bars)
    2 20W diode bar is used (this is a 4 if a 40W bar is used)
    F Flat rod faces are used (this is a C if curves are used)
    A Rod dopant of 0.6% (some pulsed modules use a 1% dopant and E is used)
    1 Standard temperature testing
    More Detailed Descriptions of Model Number: RBA20-0.66C2-FA1
    RBA New version module replacing old RB
    20 Rod diameter (20=2.0 mm, 30 = 3.0 mm, etc.)
    0.66 1 diode bar per ASM but only 2 ASM per heat exchanger. There are 3 heat exchanger for a total of 6, 20W bars = 120W of diode pump power
    C CW (this is a P if the module uses pulsed bars)
    2 20W diode bar is used (this is a 4 if a 40W bar is used)
    F Flat rod faces are used (this is a C if curves are used
    A Rod dopant of 0.6% (some pulsed modules use a 1% dopant and E is used)
    1 Standard temperature testing

    RBAT Series Diode-Pumped Nd:YAG Laser Modules 10-100W

    The RBA SilentLight series laser module incorporates a number of design enhancements that significantly reduce optical noise and improve beam pointing performance when operating in TEM00 laser resonators. With power ranges from 35W to 100W, the SilentLight module was designed to meet the needs of high finesse (single transverse mode, low noise) Q-switched laser applications.
    This reliable and efficient gain module can be used as the engine in new DPSS laser system development and production, or to convert existing lamp-based laser designs to state-of-the-art diode pumping. The Nd:YAG laser rod is side pumped by long lifetime laser diode bars, and the module is cooled by re-circulating filtered water through a simple non DI water chiller system.
    Model Rod Type Pump Power(w) Output Power4 Diode Bias Voltage5 Drive Current5 Driver
    RBAT20-1C2 2x63mm, YAG1 180W 35W 18 VDC 0-38A (25A nomimal) LDD3018
    LDD-600-30-18OEM
    RBAT24-1C2 2x73mm, YAG1 240W 50W 25 VDC 0-38A (25A nomimal) LDD3024
    LDD-1000-30-24OEM
    RBAT30-1C2 3x63mm, YAG1 180W 50W 18 VDC 0-38A (25A nomimal) LDD3018
    LDD-600-30-18OEM
    RBAT34-1C2 3x73mm, YAG1 240W 75W 24 VDC 0-38A (25A nomimal) LDD3024
    LDD-1000-30-24OEM
    RBAT35-1C2 3x83mm, YAG1 300W 100W 30 VDC 0-38A (25A nomimal) LDD3030
    LDD-1000-30-30OEM

    REA-Series Diode-Pumped Nd:YAG Laser Modules (140W-650W)

    The REA Series Laser Module delivers the reliability and performance of diode pumping to high power industrial and scientific laser systems, virtually eliminating the downtime experienced by older lamp-based laser technologies. Drive your laser system up to 650 watts of CW power @ 1064nm.
    This reliable and efficient gain module can be used as the "engine" in new laser system development and production, or to convert your existing lamp-based designs to state-of-the-art diode pumping. The Nd:YAG laser rod is pumped by radial arrays of efficiently coupled long lifetime laser diode bars, and delivers good pump uniformity and stable lensing performance. The laser module requires between 60 - 120 VDC diode bias from a reliable solid-state driver, and is cooled by re-circulating filtered water from a simple chiller system.
    Model Rod Diameter1 Output Power2 Diode Bias Voltage3 Driver Current2
    REA4006-1C2H 4x126mm 140W 60 VDC 0-32A (25A nominal)
    REA5006-1C4H 5x126mm 250W 60 VDC 0-50A (40A nominal)
    REA6306-1C4H 6.35x126mm 275W 60 VDC 0-50A (40A nominal)
    REA5008-1C2H 5x126mm 200W 80 VDC 0-32A (25A nominal)
    REA5008-1C4H 5x126mm 400W 80 VDC 0-50A (40A nominal)
    REA6308-1C4H 6.35x146mm 450W 80 VDC 0-50A (40A nominal)
    REA5010-1C4H 5x167mm 500W 100 VDC 0-50A (40A nominal)
    REA6310-1C4H 6.35x167mm 550W 100 VDC 0-50A (40A nominal)
    REA5012-1C4H 5x167mm 600W 120 VDC 0-50A (40A nominal)
    REA6312-1C4H 6.35x167mm 650W 120 VDC 0-50A (40A nominal)
    1 0.6% Nd doping.
    2 Minimum 1064 nm multi-mode output in a short cavity (280 5 mm flat HR/flat 70%R OC) CW oscillator arrangement at delivery. Nominal Drive Current 25A and 40A for IC2 and IC4 respectively.
    3 Max current is 32A and 50A for IC2 and IC4 respectively. Required voltage at the pump head stated w/o consideration for inefficiencies in the electrical system.
    ** Pulsed versions available.
    Descriptions of model number: REA6308-1C4-FA1
    REA New version module covering the old style RD and RE Modules
    63 Rod diameter (40=4.0 mm, 50 = 5.0 mm, 63 = 6.35 mm, etc.)
    08 The number of ASM per heat exchanger (old RD used 6, old RE used 8 and new REA versions have 10 and 12)
    1 1 diode bar per ASM (this is a 2 if 2 diodes are used)
    C CW (this is a P if the module uses pulsed bars)
    4 40W diode bar is used (this is a 2 if a 20W bar is used)
    F Flat rod faces are used (this is a C if curves are used)
    A Rod dopant of 0.6% (some pulsed modules use a 1% dopant and E is used)
    1 Standard temperature testing
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