Compact MID-IR Saturable Absorber for Efficient Laser Operation

• Customization: Available
• After-sales Service: Shelf Life One Year (Under Normal Use Conditions)
• Warranty: Shelf Life One Year (Under Normal Use Conditions)
• Model NO.: SESAM
• Certification: ISO9001
• Customized: Customized
• Absorption Rate: 40%; 38%
• Modulation Depth: 15%; 11.5%
• Relaxation Time: 680PS; 720PS; 7PS; 1.4PS
• Model: 6800sam2800; 7200sam3500; 70sam3500; 14sam3500
• Specification: Central wavelength: 2800; 3500
• Trademark: CRYSTRONG
• Origin: China

Product Description

SESAM

SESAM (Semiconductor Saturable Absorber Mirror ) mode-locked ultrafast pulsed lasers represent an important breakthrough in the development of mode-locked lasers, but a key challenge remains, that is, extending SESAM technology to the mid-infrared (MIR) region.

We propose a design based on InAs/GaSb superlattice SESAM, which can achieve over 99% reflectivity, 10%~15% modulation depth, and 1.4ps-720ps flexibility in the wavelength range of 2800nm-5000nm. relaxation time and high saturation energy flow, it can achieve a stable phase mode locking function. This is the first time in the world to realize a 3-5μm ultrafast fiber laser. Its ultra-wide operating bandwidth and flexible parameter design can meet the requirements of different types of lasers in the 3-5μm band, such as fluoride fiber lasers, crystal lasers, and even 3-5μm spectral range semiconductor lasers, etc.,  and will greatly promote the development of mid-infrared ultrafast coherent sources and related application fields.

Applications
Key mode-locking component for DPSS passive mode-locked laser

Structure

1. Class-II Superlattice with wide bandwidth covering 2~5μm
2. No Lattice Mismatching, 10×LIDT than conventional models  
3. Superfast Relaxation Time (<1.4ps)

Main Features:

• World's first 3-5 μm high-stability mid-infrared mode-locked laser
• Higher damage threshold
• Perfect and fast after-sales service
• Competitive product prices

Specifications:

Model type	SAM-2800-40-680ps-c/e	SAM-3500-38-720ps-c/e	SAM-3500-38-7ps-c/e	SAM-3500-38-1.4ps-c/e
Central Wavelength	2800nm	3500nm	3500nm	3500nm
Absorptivity	40%	38%	38%	38%
Modulation Depth	15%	11.5%	14%	11.5%
Relaxation Time	680ps	720ps	7ps	1.4ps
Saturation Fluence	70μJ/cm²	70μJ/cm²	50μJ/cm²	40μJ/cm²