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CW MIR Room Temperature Single Mode (DFB) QCL(4-12μm)

Products / Lasers/Light /Quantum Cascade Lasers /MIR QCL Chips(4-12μm, Package Customizable) /CW MIR Room Temperature Single Mode (DFB) QCL(4-12μm) /
CW MIR Room Temperature Single Mode (DFB) QCL(4-12μm)
Chip-On-Submount QCLs Packaging in TO3 housing Packaging in HHL/Pigtailed HHL housing Laser Laboratory (LLH) Housing Packaging on Submounts Related Products Order Now!

SIMTRUM offers a series of room temperature CW Single Mode (DFB) QCLs with Chip-on-Submount (COS) packaging，covering the wavelength from 4-12μm (799.6cm-1-2326.0cm-1). In addition, we provide various packaging configurations/solutions for these COS-packaged QCLs, including TO3, HHL, and LLH.

 

Chip-On-Submount QCLs

SIMTRUM offers a series of room temperature CW Single Mode (DFB) QCLs with COS packaging，covering the wavelength from 4-12μm (799.6cm-1-2326.0cm-1).

In a Distributed Feedback Grating (DFB) device, a grating is etched into the active region of the laser and forces the emission to occur at a very specific wavelength which is determined by the grating periodicity. For this reason, DFB lasers are also known as Single Mode Lasers. The exact wavelength can be adjusted over a small Tuning Range ( up to 4 cm-1) by changing the operating current and/ or the temperature of operation; the exact wavelengths available from a given laser will be specified in an individual datasheet. These lasers are available as chips-on-submount or packaged in HHL or TO3 housing. 

*Chip-on-submout

Features

  • Continuous-wave output

  • Single-Mode Spectrum (DFB)

  • Tunable source

  • Low Dissipation

  • High Beam Quality

  • Narrow Linewidth

Applications

  • Gas Spectroscopy

  • Photoacoustic Sensing

  • Metrology

 

 

 

Specifications

Parameter [Unit] Min. Value Typical Value Max. Value Note
Central Wavelength [μm] 4.25 - 12.5 Each laser is specified with a single wavelength or a small range within the available range.
Central Frequency [cm-1] 800 - 2350
Operating Temperature [℃] -20 20 50 Potential values, only temperatures listed in data sheet are reachable. For lasers in a LLH, HHL or TO3 housing, the chip operation temperature is guaranteed to be reachable with the housing at room temperature (+20°C). For lasers delivered as CoC a method of temperature control is required to operate the laser.
Beam Divergence (Vertical) [°] 40 60 80 The beam diffracts strongly at the output facet of a chip-on-submount. Collimated beam output is possible with a proper packaging; see housing brochure for details.
Beam Divergence (Horizontal) [°] 30 40 60
Linewidth [MHz] 1 1 30 In theory the instantaneous linewidth of a QCL can be extremely low, of the order of kHz. In practice however, the total noise of a system will almost always be given by the noise of the current driver and/or the temperature noise, and when that noise is much higher than the intrinsic noise you can consider the QCL as a perfect transducer and compute the effective amplitude or spectral noise from the datasheet. For typical commercial drivers the effective noise is on the order of MHz.
Output Power [mW] 2 20 200  
Tuning Range [cm-1] 0.5 1 4 Lasers tune with the operation temperature and current, tuning range availability depends on the central wavelength. A minimum tuning range can be specified.
Tuning Rate [%] 0.05 0.1 0.2 As a percentage of the central wavelength.
Storage Temperature [℃] 15 20 65 Must be kept above the dew point at all times.
*For a list of more specific QCL chips and the corresponding datasheets, please refer to:list of LL-AL01-CW-SM-COS-C.

 


Pulsed lasers or low-dissipation CW lasers (< 3 W) are available in TO3 cans, which are smaller and less power-intensive than the HHL packages. TO3 cans are sealed and the beam is collimated.

Features

  • Size : 38.8 mm x 25.4 mm x 20.5 mm

  • Small-size, low dissipation

  • Pulsed lasers or low-dissipation CW laser with < 3 W dissipation only

 

Applications

  • low dissipation applications

*TO3 package suitable for lower dissipation CW-DFB

TO3 packages demand a different type of mounting than our stock lasers ; therefore please enquire directly for availability.

 

Specifications
 
Parameter Value
Imax 3.0 A
Vmax 2.85 V
Qmax 5.7 W
Clear Aperture 4 mm
Divergence < 10 mrad
 
Dimensions & Pinout

The HHL housing is a sealed collimated housing for CW or pulsed lasers. It is ideal for short-run integration and use in difficult environments. The HHL housing is much smaller than the LLH and is completely sealed. The HHL contains a Peltier junction and a NTC temperature sensor (model 10K4CG), which can be controlled by your own temperature control system. Heat dissipation is performed by thermal contact with its copper base; the heat dissipation capacity depends on the operation mode and environmental conditions.

Three versions of the beam output

  • In the standard version, the IR beam is collimated through a chalcogenide glass lens and goes through an AR-coated ZnSe window. The free-space beam has a divergence < 6 mrad.
  • In the uncollimated version, the lens is absent and the laser source is placed as close as possible from the ZnSe window for a divergent output
  • In the pigtailed version a fiber port is added to the HHL and is provided with a ~1-m length of single mode mid-IR optical fiber.

 

Applications

  • Integration into industrial systems

Features

  • Heat Dissipation up to 16W

  • Cooling up to 60°C

  • Collimated output

  • Fiber Pigtail connector available

 

*HHL with collimated beam output. The lens is inside the housing, protected by a tilted window with AR coating.
 

*Pigtailed HHL to be delivered with 1m length of single-mode mid-IR optical fiber. The heatsink shown is also available with free-space beams for easy water cooling.

Specifications

Parameters [Unit] Min. Value Typical Value Max. Value Note
Size [mm3] - 44.5×31.7×19 - This is the size of the free space HHL. The pigtailed HHL is installed on a fixed base which contains an additional fiber port.
Max. Temperature Differential [℃] - 30 60 Max. differential attainable at zero heat load. Will depend on cooler chosen.
Max. Heat Load [W] - 6 16 Max heat load to keep chip at room temperature. Will depend on cooler chosen.
Beam Divergence (free space) [mrad] - 5 6 For standard collimated beam. Uncollimated or pigtailed options also available.
Temperature Sensor   NTC   Standard is NTC of Type 10K4CG. pt100 sensor also available.
Fiber Connector   FC/PC   For pigtailed housing only.
Fiber Coupling Efficiency [%] 5 15 50 In the case of pigtailed housing the output of the housing will be lower than the output of the chip prior to encapsulation due to partial coupling to the chip mode. The coupling depends on details of the output facet and is not adjustable. The coupling will be optimized for the expected temperature of operation.
Coupling Repeatability [%] - 2.5 - Repeatibility with repeated fiber plugging/unplugging
ZnSe Window Coating [μm] - 2-12 - The ZnSe window is tilted to avoid back-reflections.
Fiber Numerical Aperture - 0.3 - For 4.7 micron fiber - the value will vary if a different fiber is chosen.
Fiber Length [m] 0.5 1 - Standard length - any commercially available length can be chosen, the price of the fiber will be added. Note that attenuation is typically larger for mid-IR than for telecommunication fibers.
Single-mode fiber available [μm]     5 Single-mode Indium Fluoride Glass is available for wavelengths shorter than 5 microns. Other types of fibers are possible, in this case the specifications may change.

 

Dimensions

The LLH is the perfect housing for research applications. With easy laser exchange, it is the most versatile housing available.

Features

  • Peltier cooled laser-stage inside, minimal temperature <-30°C

  • Laser power supply by low impedance line from LDD100

  • Anti Reflection Coated (3.5 to 12 µm) ZnSe window.

  • Exchangeable laser sub mount (NS or ST).

  • Direct voltage measurement on the laser connection, AC coupled.

  • Pt100 temperature measurement.

  • Needs air or water cooling (water tubing not included)

  • Temperature stabilisation, compatible with TC-3

  • Can support both CW and pulsed lasers

  • Size: 10cm x 5cm x 5cm

  • Pin connectors

  • lead time 6 weeks

*LLH

 

 

 
 
Specifications
Parameter Value
Imax 5.0 A
Vmax 15.8 V
Qmax 40 W
Clear Aperture 4 mm
Divergence approx. 60 ◦ x 40 ◦

Laser chips can be mounted on a variety of submounts.

Features

  • The NS submount is a standard copper submount that can be mounted in a HHL or LLH housing or a variety of third party housings. The NS submount is typically attached mechanically (e.g. using screws) to a heatsink. The NS submount can hold single or twin laser chips. Only legacy lasers use this submount; newer lasers will be mounted one of the other options.
  • The HP-GS submount is a larger copper submount that is used only for high-power lasers.
  • The AN submount is an aluminium nitride thin submount with a metallized back-contact. It can be mounted in a HHL or TO-3 housing.
  • The AN-NSP and AN-NSC are AN submounts mounted onto a NS-like copper submount; they have both identical dimensions and are compatible with the LLH housing and some other third-party housings. The NSP uses In solder with a melting temperature of 156°C while the NSC uses InAg with a melting temperature of 143°C. The InAg solder is cleaner and are the default choice for recently mounted lasers but many legacy lasers still use the NSP housing.
 Dimensions

The drawing for each submount can be found in the submount dimensions file .


Product Wavelength Avg. Power Tuning Range Output Mode
MIR Single-Channel Wide Spectrum Tunable Laser – SuperTune 4-5μm
(5-12μm customizable)		 max. 20 mW >96cm-1@2197.8cm-1
(＞200nm@4.55μm)		 Free Space
MIR Multi-Channel Widely Tunable External Cavity QCL-Glider 3-13μm max. 30 mW ＞2200cm-1 
(Max. 4 chips loaded)		 Free Space/Fibered
3-12μm
max. 40 mW
Not Tunable
Free Space
CW LWIR Quantum Cascade Lasers (4-17μm) 4-17 μm ＞ 5 mW - -
HHL housed CW MIR Single Mode (DFB) QCL(4-9.7μm) 4-9.7 μm 5-20 mW ~3cm-1 Free Space
CW MIR Room Temperature Single Mode (DFB) QCL(4-12μm 4-12μm 1-200mW ~3cm-1 Free Space/Fibered

Technical Guide

If you need our technical team for guidance on product selection or customization, please help to provide below technical information, it helps to speed up the process.

Items Detail Unit Remark
Application      
Working Wavelength   μm  
Wavelength Tuning Range   nm  
Operating Mode   / CW/ Pulse
Output Power   W  
Operation Temperature   ℃  
Submount Type   / NS/NSP/AN
Packaging   /  
Power Stability   %  

 

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