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TA-SHG pro

High-power, tunable, frequency-doubled diode laser

Resonant frequency doubling stage
Wavelengths: 330 .. 780 nm, linewidth 1 .. 120 kHz
AutoAlign and FiberMon options
PowerLock output power stabilization
With digital control DLC pro: Less drift & linewidth

The TA-SHG pro system, part of the UV / RGB solutions, comprises a tunable diode laser, a high power semiconductor (TA) and an integrated frequency doubling stage (SHG pro). Alternatively, it is available with a fiber (FA) or Raman fiber (RFA) amplifier. The SHG stage is a folded ring cavity in bow-tie configuration with excellent thermal and mechanical stability.

The system now includes fully-automated push-button coupling optimization into the TA chip, the SHG cavity and the output fiber, as well as output power stabilization. It provides tunable laser radiation for spectroscopy, laser cooling, optical data storage, holography and interferometry.

The rack-mounted version of TA-SHG pro for integration into T-RACK is available as MSHG pro.

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Specification

Wavelength range *	330 .. 680 nm (with semiconductor amplifier) 510 .. 780 nm (with fiber amplifier)
Seed laser	DL pro, DL DFB
Amplifier	Semiconductor amplifier (TA pro), fiber amplifier (FA) or Raman fiber amplifier (RFA)
Doubling stage	SHG pro
Coarse tuning	2 .. 20 nm

Continuous scan range	> 20 GHz
Operation	Single frequency
Linewidth	1 .. 120 kHz
Output power	Up to 2000 mW or 50 W with fiber amplifier, depending on wavelength
Spatial mode	Near diffraction limited
Optical isolation	Two isolators (DL stage, TA stage) included
Beam shaping	Included
Water cooling	Not required, supported
SHG cavity leak rate	< 1E-3 mbar l/s
Control electronics	DLC pro, 19" single-stage rack
Warm-up time	< 5 min typ.
Dimensions laser head (H x W x D)	90 x 410 x 485 mm3
Weight laser head	Up to 20 kg
Dimensions control unit	Single stage 19" rack DLC pro
Weight control unit	Up to 10 kg
Operating voltage	100 .. 120 V / 220 .. 240 V AC, 50 .. 60 Hz (auto detect)
Power consumption	< 150 W typ., 300 W max.
PC Interface	Ethernet, USB, analog control
Environment temperature	15 - 30 °C (operating), 0 - 40 °C (storage and transport)
Environment humidity	Non-condensing

*With different NLO crystals and mirrors

Examplary Systems

Wavelength (nm)	Output Power (mW)
396 - 400	1200
459 - 463	1300
473 - 481	1000
479 - 488	1000
492 - 495	1000
555 - 560	2000
588 - 590	1200
625 - 627	800
670 - 674	1000

Additional Information

TA-SHG pro: Available wavelengths and output power

TA-SHG pro system with tapered amplifier TA pro.

FA-SHG pro system with integrated fiber amplifier.

TA-SHG pro: BEC of Chromium

Options

	AutoAlign Automated alignment of beams coupled to SHG cavity and FiberMon. No compromising of passive stability - AutoAlign is only activated on user request.
	Fiber Delivery Fiber Delivery (FD) is optionally available with TOPTICA's patented fiber coupler FiberDock and a suitable polarization maintaining (PM) fiber. FiberDock provides highest single-mode fiber coupling efficiencies, easy alignment and at the same time highest stability. For most lasers, we specify a PER behind fiber of >20 dB with our Fiber Delivery option. Please also inquire about Long Life and High Power fibers as well as fiber splitters. Optical isolation is mandatory for fiber coupled diode laser systems.
	FiberMon Allows measurement of the SHG output power propagating in a single-mode, polarization-maintaining (SM-PM) fiber for PowerLock and AutoAlign. Two wavelength regions are available.
	EOM An EOM before the doubling cavity allows to independently create the PDH signal for laser locking. Advantageous for maximum mode-hop-free tuning range.
	Narrow Linewidth The DL pro fundamental master laser is replaced by a narrow-linewidth version. Other master lasers (DFB/DBR) available upon request.
	High Power At certain wavelenghts, high power tapered amplifiers are available. The option includes high-current driving electronics and a high-power capable SHG stage.
	Advanced Locking Various lock options from side-of fringe frequency stabilization to PDH linewidth narrowing available. Modules like DigiLock 110 or PDH/DLC pro can be installed in the DLC ext extension rack, with shortest-possible cable length right next to the laser head. For the most demanding applications you can use the FALC pro (see Laser Locking Electronics).

Applications
- Atom optics: Laser cooling & trapping
- Bose-Einstein Condensation & degenerate Fermi gases
- Ion laser cooling & trapping
- Quantum information
- Metrology (frequency, acceleration, rotation, fundamental constants)
- Spectroscopy (atoms, molecules, quantum dots, trace NV centers)
- Optical pumping & EIT
- Rydberg excitation (Rydberg Flyer for complete laser solutions)
- Laser magnetic field measurement
- LIDAR seeding
- Interferometry & holography
- Optical Clocks
Downloads
- Product info: TA-SHG_pro
- Product Brochure Scientific Lasers (please see website for latest specs!)
- Technical Drawings TA-SHG pro
Literature
- Article: Ulrich Eismann Direct and frequency-converted diode lasers provide all wavelengths for holography, Laser Focus World (2018), German version, Chinese version, Japanese version
- Article: Active and passive stabilization of a high-power UV frequency-doubled diode laser, CLEO, OSA Technical Digest (Optical Society of America, 2016)
- Article: Short, shorter, shortest: Diode lasers in the deep ultraviolet, Laser Focus World, June 2016
- Article: Kurz, kürzer, am kürzesten, Best of (2015)
- Article: More colors! Diode lasers reach Yellow and Orange, Physics' Best (2013)
- Article: Frequenzkonvertierte cw-Lasersysteme für Forschung und Industrie, Physik Journal (2007)
- Application Note: Phase and Frequency Locking of Diode Lasers
- Application Note: Linewidth Measurement of Diode Lasers
Related Products
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- Photonicals Laboratory tools and accessories, e.g. Fabry-Perot Interferometers and Wavelength Meters