Description

Q-Switch Ii Dye CAS NO 21016-22-8 is a specialized organic dye compound primarily utilized as a saturable absorber in laser systems. Its core value lies in its ability to modulate laser pulses, enabling the generation of high-peak-power, short-duration pulses essential for precision applications. This product is critical for industries and research institutions involved in advanced photonics, laser manufacturing, and nonlinear optics.

Application

• Primary use as a saturable absorber (Q-switch) in solid-state laser cavities (e.g., Nd:YAG, Nd:YLF).
• Generation of nanosecond and picosecond laser pulses for material processing and micromachining.
• Mode-locking applications for producing ultra-short (femtosecond) laser pulses in research lasers.
• Nonlinear optical studies and frequency conversion experiments.
• Laser ranging (LIDAR) and remote sensing systems.
• Medical laser systems for dermatology and ophthalmology.
• Scientific research in photochemistry and ultrafast spectroscopy.

Basic Information

Item	Details
Product Name	Q-Switch Ii Dye
CAS No.	21016-22-8
Molecular Formula	C26H21N2O4S+ • I-
Molecular Weight	584.42 g/mol
Synonyms	1-Ethyl-2-[6-(1-ethyl-1,3-dihydro-3,3-dimethyl-2H-indol-2-ylidene)-2,4-hexadien-1-ylidene]-3,3-dimethyl-3H-indolium Iodide; DTDCI Iodide; 1,1'-Diethyl-2,2'-dicarbocyanine Iodide; Q-Switch II; Cryptocyanine; Cryptocyanine dye; Saturable absorber dye II; Laser dye for Q-switching
EINECS	Contact for details

Quality Control

Our Q-Switch Ii Dye is produced under stringent conditions to ensure high purity and consistent performance critical for laser applications. Each batch undergoes comprehensive analytical testing, including HPLC for purity and spectrophotometry for absorption characteristics. Certificates of Analysis (COA) detailing all test results are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This material is light-sensitive and should be handled under appropriate conditions to prevent degradation.

Specification

Item	Specification
Appearance	Dark green to bronze crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Absorption Maximum (λmax)	~706 nm (in methanol)
Solubility	Soluble in methanol, ethanol, dichloromethane
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.