Ultraviolet laser system and method having wavelength in the 200-nm range

An apparatus comprising:

• a source of pulsed laser light having a first wavelength of 1000 nm;
• a first frequency-doubler device that receives the laser light and that outputs light having a second wavelength of 500 nm;
• a second frequency-doubler device that receives the light having the second wavelength and that outputs light having a third wavelength of 250 nm;
• a delay unit that receives the laser light and outputs a delayed laser light at 1000 nm;
• and
• a sum-frequency mixer device that includes a non-critically phase-matched (NCPM) cesium lithium borate (CLBO) device and that receives the delayed laser light and the light having the third frequency and that outputs light having a fourth wavelength of 200 nm.

A method comprising:

• providing laser light having a first wavelength;
• doubling a frequency of the laser light and outputting light having a second wavelength of one-half the first wavelength;
• doubling a frequency of the light having the second wavelength and outputting light having a third wavelength of one-half the second wavelength;
• delaying the laser light and outputting a delayed laser light;
• and
• sum-frequency mixing the delayed laser light and the light having the third frequency and outputting light having a fourth wavelength equal to a product of the first wavelength and the third wavelength divided by a sum of the first wavelength and the third wavelength.

An apparatus comprising:

• a source of laser light having a first wavelength;
• and
• means for quintupling a frequency of the laser light including:
• means for generating laser light having a second wavelength,
• means for generating laser light having a third wavelength, and
• non-critically phase-matched means for sum-frequency mixing the laser light having the first wavelength and the laser light having the third wavelength and outputting light having a fourth wavelength equal to one fifth the first wavelength.

An apparatus comprising:

• a source of laser light having a first wavelength;
• and
• means for quintupling a frequency of the laser light outputting light having a fourth wavelength equal to one fifth the first wavelength, wherein the means for quintupling the frequency of the laser light further includes:
• means for doubling a frequency of the laser light and outputting light having a second wavelength of one-half the first wavelength;
• means for doubling a frequency of the light having the second wavelength and outputting light having a third wavelength of one-half the second wavelength;
• means for delaying the laser light and outputting a delayed laser light;
• and
• means for sum-frequency mixing the delayed laser light and the light having the third frequency and outputting light having a fourth wavelength equal to a product of the first wavelength and the third wavelength divided by a sum of the first wavelength and the third wavelength.

A method comprising:

• providing a non-critically phase-matched (NCPM) cesium lithium borate (CLBO) device;
• providing laser light having a first wavelength;
• doubling a frequency of the laser light and outputting light having a second wavelength of one-half the first wavelength;
• doubling a frequency of the light having the second wavelength and outputting light having a third wavelength of one-half the second wavelength;
• and
• sum-frequency mixing, in the NCPM CLBO device, the laser light having the first wavelength and the light having the third frequency and outputting light having a fourth wavelength equal to a product of the first wavelength and the third wavelength divided by a sum of the first wavelength and the third wavelength.

A method comprising:

• providing a first and a second non-critically phase-matched (NCPM) cesium lithium borate (CLBO) device;
• providing laser light having a first wavelength;
• doubling a frequency of the laser light and outputting light having a second wavelength of one-half the first wavelength;
• doubling a frequency of the light having the second wavelength and outputting light having a third wavelength of one-half the second wavelength;
• and
• sum-frequency mixing, in the second NCPM CLBO device, the laser light having the first wavelength and the light having the third frequency and outputting light having a fourth wavelength equal to a product of the first wavelength and the third wavelength divided by a sum of the first wavelength and the third wavelength, wherein the doubling the frequency of the light having the second wavelength includes non-critical phase matching using a CLBO device;
• and
• wherein the first wavelength is 1000 nm, the second wavelength is 500 nm, the third wavelength is 250 nm, and the fourth wavelength is 200 nm.

An apparatus comprising:

• a source of laser light having a first wavelength;
• a first frequency-doubler device that receives the laser light having the first wavelength and that outputs light having a second wavelength of one-half the first wavelength;
• a second frequency-doubler device that receives the light having the second wavelength and that outputs light having a third wavelength of one-half the second wavelength;
• and
• a non-critically phase-matched (NCPM) cesium lithium borate (CLBO) sum-frequency mixer device that receives the laser light having the first wavelength and the light having the third frequency and that outputs light having a fourth wavelength equal to a product of the first wavelength and the third wavelength divided by a sum of the first wavelength and the third wavelength.

An apparatus comprising:

• a source of laser light having a first wavelength;
• a first frequency-doubler device that receives the laser light having the first wavelength and that outputs light having a second wavelength of one-half the first wavelength;
• a second frequency-doubler device that receives the light having the second wavelength and that outputs light having a third wavelength of one-half the second wavelength;
• and
• a non-critically phase-matched (NCPM) cesium lithium borate (CLBO) sum-frequency mixer device that receives the laser light having the first wavelength and the light having the third frequency and that outputs light having a fourth wavelength equal to a product of the first wavelength and the third wavelength divided by a sum of the first wavelength and the third wavelength;
• and
• wherein the first wavelength is 1000 nm, the second wavelength is 500 nm, the third wavelength is 250 nm, and the fourth wavelength is 200 nm.

An apparatus comprising:

• a source of laser light having a first wavelength;
• a first frequency-doubler device that receives the laser light having the first wavelength and that outputs light having a second wavelength of one-half the first wavelength;
• a second frequency-doubler device that receives the light having the second wavelength and that outputs light having a third wavelength of one-half the second wavelength;
• a non-critically phase-matched (NCPM) cesium lithium borate (CLBO) sum-frequency mixer device that receives the laser light having the first wavelength and the light having the third frequency and that outputs light having a fourth wavelength equal to a product of the first wavelength and the third wavelength divided by a sum of the first wavelength and the third wavelength;
• wherein the second frequency-doubler device includes a non-critical phase matching CLBO device;
• and
• wherein the first wavelength is 1000 nm, the second wavelength is 500 nm, the third wavelength is 250 nm, and the fourth wavelength is 200 nm.

An apparatus comprising:

• a source of laser light having a first wavelength of 1000 nm;
• a first frequency-doubler device that receives the laser light and that outputs light having a second wavelength of 500 nm;
• a second frequency-doubler device that receives the light having the second wavelength and that outputs light having a third wavelength of 250 nm;
• and
• a non-critically phase-matched (NCPM) cesium lithium borate (CLBO) sum-frequency mixer device and that receives the laser light and the light having the third frequency and that outputs light having a fourth wavelength of 200 nm.